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Figures 1 through 6 illustrate in simplified form some of the more common planetary gears, gearsets, and geartrain arrangements in order to establish applicable terminology. Figures 7 and 8 provide additional examples that use elements of those gear arrangements.

The following is a list of the most common terminology used in describing automatic transmission functions.

The definitions and illustrations in this SAE Recommended Practice are intended to establish common nomenclature and terminology for automotive transmission one-way clutches.

Figures 1 through 5 illustrate in simplified form some of the more common planetary gear arrangements in order to establish applicable terminology. Figures 6 and 7 provide additional examples that use elements of those gear arrangements. Gear ratio is the numerical ratio of input to output speed.

The following is a list of the most common terminology used in describing automatic transmission functions.

Since the torque converter and fluid coupling are commonly used components of automatic transmissions in industry, the SAE appointed a committee to standardize terminology, test procedure, data recording, design symbols, and so forth, in this field. The following committee recommendations will facilitate a clear understanding for engineering discussions, comparisons, and the preparation of technical papers. The recommended usages represent the predominant practice or the acceptable practice. Where agreement is not complete, alternates have been included for clarification. This SAE Recommended Practice deals only with the physical parts and dimensions and does not attempt to standardize the design considerations, such as the actual fluid flow angle resulting from the physical blade shape.

The definitions and illustrations in this SAE Recommended Practice are intended to establish common nomenclature and terminology for automotive transmission one-way clutches.

Figures 1 to 5 illustrate in simplified form some of the more common planetary gear arrangements in order to establish applicable terminology. Gear ratio is the numerical ratio of input to output speed.

The following is a list of the most common terminology used in describing automatic transmission functions.

This test procedure is intended to apply to hydraulic pump suction filters and strainers used in automotive automatic transmissions that include hydraulic power pumps. The various paragraphs of Section 5, “Test Procedures,” include a variety of tests and alternative tests that are not applicable to all filters and applications, so the engineer must specify which tests are to be performed for a particular application. These test procedures are intended to evaluate filter functional performance characteristics only, durability is not evaluated under this standard. Filter design requirements must be specified by the engineer on the filter assembly drawing, an applicable engineering specification, or they may be summarized on an application data sheet similar to that found in this recommended practice. See Figure 6, “Filter Assembly Application and Data Sheet.” Pressure circuit filters, both barrier and system contamination control types, are not covered under this standard.

The definitions and illustrations in this SAE Information Report are intended to establish common nomenclature and terminology for automotive transmission one-way clutches.

Figures 1 to 4 illustrate in simplified form the more common planetary gear arrangements in order to establish applicable terminology. Gear ratio is the numerical ratio of input to output speed.

The following system of symbols is recommended for use in technical papers and engineering reports dealing with hydrodynamic drives.

To provide a Recommended Practice for validating the function and integrity of an automatic transmission park mechanism with its associated control system and environment.

The definitions and illustrations in this SAE Information Report are intended to establish common nomenclature and terminology for automotive transmission one-way clutches.

The following system of symbols is recommended for use in technical papers and engineering reports dealing with hydrodynamic drives.

The definitions and illustrations in this report are intended to establish common nomenclature and terminology for automotive transmission one-way clutches.