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Brake Performance And Wear Test Code Commercial Vehicle Inertia Dynamometer
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Book Synopsis Brake Performance and Wear Test Code Commercial Vehicle Inertia Dynamometer by : Truck and Bus Foundation Brake Committee
Download or read book Brake Performance and Wear Test Code Commercial Vehicle Inertia Dynamometer written by Truck and Bus Foundation Brake Committee and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Standard provides test procedures for air, air/hydraulic, and hydraulic drum and disc brakes used on highway commercial vehicles over 4536 kg (10,000 lb) GVWR.
Book Synopsis Air Brake Performance and Wear Test Code Commercial Vehicle Inertia Dynamometer by : Truck and Bus Foundation Brake Committee
Download or read book Air Brake Performance and Wear Test Code Commercial Vehicle Inertia Dynamometer written by Truck and Bus Foundation Brake Committee and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Standard provides test procedures for air and air-over-hydraulic disc or drum brakes used for on-highway commercial vehicles over 4536 kg (10000 pounds) GVWR. This recommended practice includes the pass/fail criteria of Federal Motor Vehicle Safety Standard No. TP-121D-01. This revision was prompted by the Five-Year Review interval and contains editorial changes intended to make the document cleaner and more user friendly.
Book Synopsis Brake Power Rating Test Code--Commercial Vehicle Inertia Dynamometer by : Truck and Bus Foundation Brake Committee
Download or read book Brake Power Rating Test Code--Commercial Vehicle Inertia Dynamometer written by Truck and Bus Foundation Brake Committee and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The code provides test procedures and methods of calculating a brake rating from the data obtained for brakes used in highway commercial vehicles over 4.5 T (10 000 lbs) GVWR air and hydraulic. Some general correlation may be expected between brake ratings established by this means and those obtained from vehicle tests such as outlined in SAE J880. The brake rating power, kW (hp) calculated by conduct of this code is an arbitrary index of performance of the brake and drum when tested by this procedure and may be appreciably different from the values obtained by other techniques.J971 is a dynamometer test to determine the brake horsepower rating. This rating is best determined via vehicle test as it is highly dependent upon the brake cooling characteristics that are not simulated on the dynamometer. Certain conditions specified currently in J971, such as the percentage of lining to drum contact, may not allow the test to be run as specified. Testing per J971 is not being done, having been replaced by testing to the procedures specified by FMVSS-121 and SAE J2115.
Book Synopsis BRAKE RATING TEST CODE COMMERCIAL VEHICLE INERTIA DYNAMOMETER by : Truck and Bus Foundation Brake Committee
Download or read book BRAKE RATING TEST CODE COMMERCIAL VEHICLE INERTIA DYNAMOMETER written by Truck and Bus Foundation Brake Committee and published by . This book was released on 1966 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The code provides test procedures and methods of calculating a brake rating from the data obtained. At this time, the procedure has been developed to cover only brakes of the sizes and types generally used on commercial vehicles. Some general correlation may be expected between brake ratings established by this means and those obtained from vehicle tests such as outlined in SAE J880. However, the effects of brake environment as installed in various vehicles are not considered in this laboratory procedure.The code may be used as a supplement to SAE J667, or it may be used independently.Other methods of measuring energy absorption capacity and establishing a brake rating other than those described herein may be equally valid.The user of this SAE Recommended Practice should also take note that the brake rating horsepower (brhp) calculated by conduct of this code is an arbitrary index of performance of the brake (and drum) when tested by this procedure and may be appreciably different from the values obtained by other techniques.
Book Synopsis Brake Power Rating Test Code by : Society of Automotive Engineers. Truck and Bus Brake Committee
Download or read book Brake Power Rating Test Code written by Society of Automotive Engineers. Truck and Bus Brake Committee and published by . This book was released on 1991 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis SAE International’s Dictionary of Commercial Vehicles by : Jon M. Quigley
Download or read book SAE International’s Dictionary of Commercial Vehicles written by Jon M. Quigley and published by SAE International. This book was released on 2024-07-10 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: Embark on a journey through the pulsating heart of global commerce with the Commercial Vehicle Dictionary—a comprehensive guide illuminating the intricate language of transportation. From seasoned professionals to curious enthusiasts, this indispensable resource unveils the dynamic world of commercial vehicles, blending precision, innovation, and sustainability. Navigate with confidence as you explore a meticulously curated lexicon covering vehicle classifications, advanced technologies, safety protocols, regulatory frameworks, and emerging trends. Whether optimizing routes, tending to fields, or fascinated by machinery, this dictionary serves as your beacon through the ever-evolving landscape of commercial vehicles. Empower yourself with knowledge, enhance communication, and deepen your understanding of this multifaceted industry. Whether deciphering engine technologies, mastering logistics management, or staying updated on industry standards, let this dictionary be your compass in the vast realm of commercial vehicles. Dive into the rich tapestry of terms and concepts that shape the language of transportation—your journey begins here. (ISBN: 9781468607888 ISBN:9781468607895 ISBN:9781468607901 DOI:10.4271/9781468607895)
Book Synopsis Low-duty Inertia Dynamometer Hydraulic Brake Wear Test Procedures for Vehicles Above 4536 Kg (10 000 Lb) of GVWR by : Truck and Bus Hydraulic Brake Committee
Download or read book Low-duty Inertia Dynamometer Hydraulic Brake Wear Test Procedures for Vehicles Above 4536 Kg (10 000 Lb) of GVWR written by Truck and Bus Hydraulic Brake Committee and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Recommended Practice is derived from OEM and tier-1 laboratory tests and applies to two-axle multipurpose passenger vehicles, or trucks with a GVWR above 4536 kg (10 000 pounds) equipped with hydraulic disc or drum service brakes. Before conducting testing for a specific brake sizes or under specific test conditions, review, agree upon, and document with the test requestor any deviations from the test procedure. Also, the applicable criteria for the final test results and wear rates deemed as significantly different require definition, assessment, and proper documentation; especially as this will determine whether or not Method B testing is needed.This Recommended Practice does not evaluate or quantify other brake system characteristics such as performance, noise, judder, ABS performance, or braking under extreme temperatures or speeds. Minimum performance requirements are not part of this recommended practice. Consistency and margin of pass/fail of the minimum requirements related to wear rates and wear behavior can be assessed as part of the project in coordination with the test requestor.NOTE: This Recommended Practice uses the unit conversion and rounding techniques from the NIST Special Publication 811. This to ensure the use of standard conversion factors and to determine the appropriate number of significant digits to ensure the Rounding Error (RE) of the converted unit is smaller than or similar to the RE of the original English or Imperial unit. Certain vehicle applications (like flat-bed recovery vehicles) have driving patterns which are considered light-duty with (a) friction material temperatures remaining under 232.0 °C (450 °F) 2.03 to 2.54 mm (0.08 to 0.1 inch) below the braking surface for at least 90% of the time, and (b) brake applications which require 2690 kPa (390 lbf/in2) or less of hydraulic pressure. This Recommended Practice provides two inertia-dynamometer test procedures, which are repeatable and cost-effective to assess, screen, benchmark, troubleshoot, or fingerprint a given foundation brake regarding low-duty brake wear. The first procedure (or Method A) is a wear versus temperature test from 93.0 to 427.0 °C (200 to 800 °F) to determine if there are potential wear rate issues under low temperature conditions and a low-duty driving cycle. If deemed required after the initial wear versus temperature test (Method A), or upon direct customer request, the second procedure (or Method B) provides an extensive wear test at a constant temperature of 79.0 °C (175 °F) to determine the wear rates and behavior of the friction couple. Data from this Recommended Practice may be combined with other brake system and vehicle characteristics for a comprehensive product characterization program.Since other wear test procedures cover a different (higher) range of operating temperatures, kinetic energies, and levels, the accelerated wear rate behavior of certain friction materials under low-duty regimes is not properly determined or estimated using test conditions which can affect the transfer layer behavior. The wear test method implemented in this Recommended Practice was derived from prior field testing and correlation investigation. Hence, careful attention was given to not alter the sequence and test conditions which have demonstrated correspondence to the vehicle behavior.The SAE Truck and Bus Hydraulic Brake Committee considers laboratory test procedures useful in supporting harmonization to improve the overall performance, durability, and safety of motor vehicle braking systems using relevant and cost-effective protocols.
Book Synopsis Low-Duty Inertia Dynamometer Hydraulic Brake Wear Test Procedures for Vehicles Above 4536 Kg (10000 Pounds) of GVWR by : Truck and Bus Hydraulic Brake Committee
Download or read book Low-Duty Inertia Dynamometer Hydraulic Brake Wear Test Procedures for Vehicles Above 4536 Kg (10000 Pounds) of GVWR written by Truck and Bus Hydraulic Brake Committee and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Recommended Practice is derived from OEM and tier-1 laboratory tests and applies to two-axle multipurpose passenger vehicles, or trucks with a GVWR above 4536 kg (10 000 pounds) equipped with hydraulic disc or drum service brakes. Before conducting testing for a specific brake sizes or under specific test conditions, review, agree upon, and document with the test requestor any deviations from the test procedure. Also, the applicable criteria for the final test results and wear rates deemed as significantly different require definition, assessment, and proper documentation; especially as this will determine whether or not Method B testing is needed.This Recommended Practice does not evaluate or quantify other brake system characteristics such as performance, noise, judder, ABS performance, or braking under extreme temperatures or speeds. Minimum performance requirements are not part of this recommended practice. Consistency and margin of pass/fail of the minimum requirements related to wear rates and wear behavior can be assessed as part of the project in coordination with the test requestor.NOTE: This Recommended Practice uses the unit conversion and rounding techniques from the NIST Special Publication 811. This to ensure the use of standard conversion factors and to determine the appropriate number of significant digits to ensure the Rounding Error (RE) of the converted unit is smaller than or similar to the RE of the original English or Imperial unit. SAE J3006 has been reaffirmed to comply with the SAE Five-Year Review policy.
Book Synopsis Brake Test Code by : Society of Automotive Engineers. Brake Committee
Download or read book Brake Test Code written by Society of Automotive Engineers. Brake Committee and published by . This book was released on 1961 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis FMVSS Inertia Dynamometer Test Procedure for Vehicles Below 4540 Kg GVWR by : Brake Dynamometer Standards Committee
Download or read book FMVSS Inertia Dynamometer Test Procedure for Vehicles Below 4540 Kg GVWR written by Brake Dynamometer Standards Committee and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document derives from the Federal Motor Vehicle Safety Standards 105 and 135 vehicle test protocols as single-ended inertia-dynamometer test procedures. The test sequences enable brake output measurement, friction material effectiveness, and corner performance in a controlled and repeatable environment. This SAE Recommended Practice (RP) also includes optional sections for parking brake output performance for rear brakes. It applies to brake corners from vehicles covered by the FMVSS 105 and 135 when using the appropriate brake hardware and test parameters. The FMVSS 135 applies to all passenger cars and light trucks up to 3500 kg of GVWR. The FMVSS 105 applies to all passenger cars, multi-purpose vehicles, buses, and trucks above 3500 kg of GVWR. This document does not include testing for school bus applications or vehicles equipped with hydraulic brakes with a GVWR above 4540 kg. This revised document takes into consideration new technologies for braking systems like (a) vacuum assist, (b) electric parking brake (EPB), and (c) regenerative braking. The inertia calculation references the latest version of the SAE J2789 to calculate the test inertia, including two methods to reflect the brake blending for the regenerative system. This revision also addresses formatting and grammatical corrections and clarifies items about FMVSS 105, FMVSS 135, or both. Other aspects of the rationale from previous revisions of this SAE Recommended Practice (RP) are still applicable.
Book Synopsis FMVSS 105 Inertia Brake Dynamometer Test Procedure for Vehicles Above 4540 Kg GVWR by : Truck and Bus Hydraulic Brake Committee
Download or read book FMVSS 105 Inertia Brake Dynamometer Test Procedure for Vehicles Above 4540 Kg GVWR written by Truck and Bus Hydraulic Brake Committee and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Recommended Practice is derived from the FMVSS 105 vehicle test and applies to two-axle multipurpose passenger vehicles, trucks, and buses with a GVWR above 4540 kg (10000 pounds) equipped with hydraulic service brakes. There are two main test sequences: Development Test Sequence for generic test conditions when not all information is available or when an assessment of brake output at different inputs are required, and FMVSS Test Sequence when vehicle parameters for brake pressure as a function of brake pedal input force and vehicle-specific loading and brake distribution are available. The test sequences are derived from the Federal Motor Vehicle Safety Standard 105 (and 121 for optional sections) as single-ended inertia-dynamometer test procedures when using the appropriate brake hardware and test parameters. This recommended practice provides Original Equipment Manufacturers (OEMs), brake and component manufacturers, as well as aftermarket suppliers, results related to brake output, friction material effectiveness, and corner performance in a laboratory-controlled test environment.The test sequences include different dynamic conditions (braking speeds, temperature, and braking history as outlined in the FMVSS 105); inertia loads equivalent to the vehicle's LLVW and GVWR; fully operational, partial failure, and failed system conditions. All applicable sections of the FMVSS 105 are included. Optional sections include: parking brake output, water recovery, TP-121D dynamometer retardation, and 32 km/h (20 mph) stops to simulate Federal Motor Carrier Safety Administration (FMCSA) requirements.This recommended practice does not evaluate or quantify other brake system characteristics such as wear, noise, judder, ABS performance, or braking under extreme temperatures or speeds. Minimum performance requirements are not part of this recommended practice. Consistency and margin of pass/fail of the minimum requirements related to stopping distance or equivalent deceleration levels of the FMVSS 105 vehicle test can be assessed as part of the project in coordination with the test requestor when using the appropriate vehicle information and vehicle dynamics modeling. Nevertheless, this procedure and its results do not replace the vehicle-level test to demonstrate compliance to FMVSS (105 for hydraulic brake systems, or 121 for air-over-hydraulic brake systems), or other mandatory regulations (like ECE R13 or equivalents). The current version of this Recommended Practice: (a) addresses proper and consistent use of units of measure and numerical values per NIST 811:2008, and (b) clarifies thermocouple location and temperature controls during the test. The technical content, the test conditions, and the test sequences remain unchanged.
Book Synopsis FMVSS 105 Inertia Brake Dynamometer Test Procedure for Vehicles Above 4 540 Kg GVWR by : Truck and Bus Hydraulic Brake Committee
Download or read book FMVSS 105 Inertia Brake Dynamometer Test Procedure for Vehicles Above 4 540 Kg GVWR written by Truck and Bus Hydraulic Brake Committee and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Recommended Practice is derived from the FMVSS 105 vehicle test and applies to two-axle multipurpose passenger vehicles, trucks and buses with a GVWR above 4 540 kg (10 000 lbs) equipped with hydraulic service brakes. There are two main test sequences: Development Test Sequence for generic test conditions when not all information is available or when an assessment of brake output at different inputs are required, and FMVSS Test Sequence when vehicle parameters for brake pressure as a function of brake pedal input force and vehicle-specific loading and brake distribution are available. The test sequences are derived from the Federal Motor Vehicle Safety Standard 105 (and 121 for optional sections) as single-ended inertia-dynamometer test procedures when using the appropriate brake hardware and test parameters. This recommended practice provides Original Equipment Manufacturers (OEMs), brake and component manufacturers, as well as aftermarket suppliers, results related to brake output, friction material effectiveness, and corner performance in a laboratory-controlled test environment.The test sequences include different dynamic conditions (braking speeds, temperature, and braking history as outlined in the FMVSS 105); inertia loads equivalent to the vehicle's LLVW and GVWR; fully operational, partial failure, and failed system conditions. All applicable sections of the FMVSS 105 are included. Optional sections include: parking brake output, water recovery, TP-121D dynamometer retardation, and 32 km/h (20 mph) stops to simulate Federal Motor Carrier Safety (FMCS) requirements.This Recommended Practice does not evaluate or quantify other brake system characteristics such as wear, noise, judder, ABS performance, or braking under extreme temperatures or speeds. Minimum performance requirements are not part of this recommended practice. Consistency and margin of pass/fail of the minimum requirements related to stopping distance or equivalent deceleration levels of the FMVSS 105 vehicle test can be assessed as part of the project in coordination with the test requestor when using the appropriate vehicle information and vehicle dynamics modeling. Nevertheless, this procedure and its results do not replace the vehicle-level test to demonstrate compliance to FMVSS (105 for hydraulic brake systems or 121 for air-over-hydraulic brake systems), or other mandatory regulations (like ECE R13 or equivalents). Vehicle and braking systems development is fast-paced, and involves a global supplier base. This Recommended Practice provides an inertia-dynamometer test procedure that is repeatable and cost-effective. It evaluates the performance of the brake corner and its components (including friction material) by following the test procedure and sequence as indicated in the Federal Motor Vehicle Safety Standard (FMVSS) 105. Data from this Recommended Practice may be combined with other brake system and vehicle characteristics to predict vehicle performance.Since the first release of the FMVSS 105, there have been numerous inertia-dynamometer test protocols developed and used by the industry with different approaches and levels of detail. The SAE Truck and Bus Hydraulic Brake Committee considers laboratory test procedures useful in supporting harmonization to improve the overall performance and safety of motor vehicle braking systems.
Book Synopsis Inertia-dynamometer Disc Brake Drag Measurement Test Procedure for Vehicles Less Than 4540 Kg GVWR by : Brake Dynamometer Standards Committee
Download or read book Inertia-dynamometer Disc Brake Drag Measurement Test Procedure for Vehicles Less Than 4540 Kg GVWR written by Brake Dynamometer Standards Committee and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Recommended Practice applies to on-road vehicles with a GVWR below 4540 kg equipped with disc brakes. This Recommended Practice is the result of an industry effort to develop inertia-dynamometer test procedures to assess brake drag under a series of speed, pressure, and temperature conditions. The test allows the project or application engineer to determine or compare the amount of brake drag for a given design level or configuration. The test provides a standard method to better quantify and better understand the parasitic (drag) torque generated by the brake corner during the off-brake condition under repeatable laboratory conditions.This inertia-dynamometer test procedure provides a method to quantify brake drag measurements combining light, moderate, and severe braking with a brake drag matrix. This matrix combines increasing static preconditioning pressure applications before measuring brake drag at increasing braking speeds. Data from this test is useful to assess the influence of certain design features, determine brake sensitivity to braking conditions, and support a comprehensive brake performance evaluation in conjunction with other measurements for pedal feel, noise, performance, and durability. Elements from this recommended practice are also applicable or useful for other laboratory test procedures to assess brake drag following standard fuel economy cycles. To better characterize the brake drag behavior of a given brake corner, include other brake drag procedures which rely more on vehicle-level evaluations. These inertia dynamometer evaluations use speed profiles and test sequences to replicate coast-down testing from proving ground testing.Due to the novelty of this Recommended Practice, the Task Force encourages users of this document to contact the SAE Staff Representative for Ground Vehicle; Motor Vehicle Council; Chassis Systems Group; Foundation Brake Steering Committee, or the Chairman of the Brake Dynamometer Standards Committee with questions and comments. This feedback will prove valuable for future revisions and updates to the Recommended Practice. The Task Force is working on developing an example of the test output to present the recommended report layout.This SAE Recommended Practice is intended as a guide towards standard practices and is subject to change to keep pace with experience and technical advances.
Book Synopsis Wear Test Procedure on Inertia Dynamometer for Brake Friction Materials by : Brake Dynamometer Standards Committee
Download or read book Wear Test Procedure on Inertia Dynamometer for Brake Friction Materials written by Brake Dynamometer Standards Committee and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Recommended Practice specifies a dynamometer test procedure to be used for the measurement of automotive service brake linings and disc brake pads wear. Special motor vehicles and motorcycles are excluded from the application. Trailers with nominal Gross Combination Weight Rating exceeding 40 tons are also excluded from this Recommended Practice.
Book Synopsis FMVSS 135 Inertia Dynamometer Test Procedure by : Brake Dynamometer Standards Committee
Download or read book FMVSS 135 Inertia Dynamometer Test Procedure written by Brake Dynamometer Standards Committee and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Recommended Practice is derived from the Federal Motor Vehicle Safety Standard 135 vehicle test protocol as a single-ended inertia-dynamometer test procedure. It measures brake output, friction material effectiveness, and corner performance in a controlled and repeatable environment. The test procedure also includes optional sections for parking brake output performance for rear brakes. It is applicable to brake corners from vehicles covered by the FMVSS 135 when using the appropriate brake hardware and test parameters. This procedure is applicable to all passenger cars and light trucks up to 3500 kg of GVWR.This Recommended Practice is the result of an industry effort to develop an inertia-dynamometer test procedure based upon the FMVSS 135 vehicle test. Results from this test provide a laboratory assessment of the brake corner performance. Data from this Recommended Practice may be combined with other brake system and vehicle characteristics to predict vehicle performance. The conditions defined in this Recommended Practice are drawn from FMVSS 135 vehicle test experience. The deceleration levels are not necessarily based on those needed to meet the requirements of the FMVSS 135. This procedure is intended to properly represent the lining conditioning which occurs during an FMVSS 135 vehicle test.
Book Synopsis Road Vehicles. Brake Lining Assemblies. Inertia Dynamometer Test Method by : British Standards Institute Staff
Download or read book Road Vehicles. Brake Lining Assemblies. Inertia Dynamometer Test Method written by British Standards Institute Staff and published by . This book was released on 2006-01-17 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Road vehicles, Brake linings, Braking systems, Braking system components, Brake pads, Road vehicle components, Inertia, Inspection, Performance testing, Mechanical testing, Approval testing, Acceptance (approval), Velocity, Formulae (mathematics), Torque, Classification systems, Testing conditions, Test equipment
Author :United States. Department of Commerce. Office of Technical Services Publisher : ISBN 13 : Total Pages :98 pages Book Rating :4.3/5 (243 download)
Book Synopsis PB [report] by : United States. Department of Commerce. Office of Technical Services
Download or read book PB [report] written by United States. Department of Commerce. Office of Technical Services and published by . This book was released on 1967 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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