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Ballot to Brake Effectiveness and Dynamometer Effectiveness - 11/19/98 Results of ballot: Brake Effectiveness - A-6, D-2, W-1, NR-2 Dynamometer Test Code - A-5, D-0, W-0, NR-2 Jim Trainor will send letter to the two people who disapproved and send a copy of the letter to SAE - 7/7/1999 Transmittal sent to pubs - 8/30/1999 Pre-print sent to sponsor - 10/27/1999 Signed copy sent to pubs - 11/9/1999 Published copy (AUG99) received - 01/14/2000

This procedure provides methods to determine the appropriate inertia values for all passenger cars and light trucks up to 4540 kg of GVWR. For the same vehicle application and axle (front or rear), different tests sections or brake applications may use different inertia values to reflect the duty-cycle and loading conditions indicated on the specific test.

This SAE Recommended Practice establishes an inertia dynamometer test procedure, using an exemplar caliper disc brake, to characterize the effectiveness of disc brake friction materials for passenger cars and light-duty trucks, up to and including 2700 kg (5954 lb) GVW. SAE J1652 provides a method of characterizing friction material effectiveness on a full disc brake, using test conditions that approximate those for U.S. mandated new vehicle brake tests.

This SAE Recommended Practice (RP) specifies a dynamometer test procedure to characterize wear rates of automotive service brake linings (brake shoes) and disc brake pads.

This procedure is applicable to high frequency squeal type noise occurrences for passenger car and light truck type vehicles that are used under conventional operating conditions. The procedure does not encompass the consequences associated with changes in environment related to temperature and humidity variations.

This procedure is applicable to high frequency squeal type noise occurrences for passenger car and light truck type vehicles that are used under conventional operating conditions. The procedure does not encompass the consequences associate with changes in environment relate to temperature and humidity variations.

This Recommended Practice provides a common method to measure wear of friction materials (brake pad assemblies and brake shoes) and their mating parts (brake disc or brake drum). These wear measurements apply to brakes fitted on passenger cars and light trucks up to 4536 kg of Gross Vehicle Weight Rating under the Federal Motor Vehicle Safety Standard (FMVSS), or vehicles category M1 (passenger cars up to nine occupants, including the driver) under the European Community’s ECE Regulations.

This recommended practice is derived from common test sequences used within the industry. This procedure applies to all on-road passenger cars and light trucks up to 4 540 kg of GVWR. This recommended practice does not address other aspects such as performance, NVH, and durability. Test results from this recommended practice should be combined with other measurements and dynamometer tests (or vehicle-level tests), and acceptance criteria to validate a given design or configuration.

This recommended practice is derived from common test sequences used within the industry. This procedure applies to all on-road passenger cars and light trucks up to 4 540 kg of GVWR. This recommended practice does not address other aspects such as performance, NVH, and durability. Test results from this recommended practice should be combined with other measurements and dynamometer tests (or vehicle-level tests), and acceptance criteria to validate a given design or configuration.