J643_202308: Hydrodynamic Drive Test Code

Features

Issuing Committee: Automatic Transmission and Transaxle Committee

Scope

Content

The range of test conditions on the dynamometer shall be sufficient to determine the primary operating characteristics corresponding to the full range of vehicle operations.

The characteristics to be determined are:

a
Torque ratio versus speed ratio and output speed
b
Input speed versus speed ratio and output speed
c
Efficiency versus speed ratio and output speed
d
Capacity factor versus speed ratio and output speed
e
Input torque versus input speed

NOTE: For more information about these characteristics and the design of hydrodynamic drives, refer to “Design Practices: Passenger Car Automatic Transmissions,” SAE Advances in Engineering, AE-18 (Third Ed.) or AE-29 (Fourth Ed.).

Rationale

Content: The technical report covers technology, products, or processes which are mature and not likely to change in the foreseeable future. The technical committee makes a conscious decision not to maintain the document any longer.

Details

DOI: https://doi.org/10.4271/J643_202308

Pages: 10

Citation: SAE International Recommended Practice, Hydrodynamic Drive Test Code, SAE Standard J643_202308, Stabilized August 2023, Revised December 2018, Reaffirmed May 2000, Issued January 1951, https://doi.org/10.4271/J643_202308.

Additional Details