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Transmission gears Automatic Transmission and Transaxle Committee Gears

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Standard

Planetary Gears - Terminology
2023-10-31
CURRENT
J646_202310
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.
Standard

Automatic Transmissions - Schematic Diagrams
2019-11-19
CURRENT
J647_201911
The following schematic diagrams reflect various methods of illustrating automotive transmission arrangements. These have been developed to facilitate a clear understanding of the functional interrelations of the gearing, clutches, hydrodynamic drive unit, and other transmission components. Two variations of transmission diagrams are used: in neutral (clutches not applied), and in gear. For illustrative purposes, some typical transmissions are shown.
Standard

Planetary Gears - Terminology
2018-07-12
HISTORICAL
J646_201807
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.
Standard

Automatic Transmissions - Manual Control Sequence
2017-03-09
CURRENT
J915_201703
The scope and purpose of this SAE Recommended Practice is to provide a standard pattern or sequence for the manual control of automatic transmissions in passenger cars and light-duty trucks. This generally refers to left hand drive mechanical shift applications.
Standard

Planetary Gears - Terminology
2011-04-04
HISTORICAL
J646_201104
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.
Standard

Automatic Transmissions - Schematic Diagrams
2010-04-23
HISTORICAL
J647_201004
The following schematic diagrams reflect various methods of illustrating automotive transmission arrangements. These have been developed to facilitate a clear understanding of the functional interrelations of the gearing, clutches, hydrodynamic drive unit, and other transmission components. Two variations of transmission diagrams are used: in neutral (clutches not applied) and in gear. For illustrative purposes, some typical transmissions are shown.
Standard

Automatic Transmissions—Manual Control Sequence
2007-10-22
HISTORICAL
J915_200710
The scope and purpose of this SAE Recommended Practice is to provide a standard pattern or sequence for the manual control of automatic transmissions in passenger cars and light-duty trucks. This generally refers to left hand drive mechanical shift applications.
Standard

Park Standard for Automatic Transmissions
2007-10-22
HISTORICAL
J2208_200710
To provide a Recommended Practice for validating the function and integrity of an automatic transmission park mechanism with its associated control system and environment.
Standard

Passenger Car and Light Truck Automatic Transmission and Automatic Transaxle Test Code
2005-06-22
HISTORICAL
J651_200506
To provide a means of obtaining the efficiency characteristics of automatic transmissions and automatic transaxles. It outlines dynamometer tests that map the steady-state characteristics over a range of operations of an automatic transmission/automatic transaxle and provides a method of presenting test data. This procedure must be followed, with similar test facilities so that results obtained from different laboratories are comparable. For this SAE Recommended Practice, the transmission is defined as the complete automatic transmission or transaxle assembly between the engine and the driveshaft(s) used to effect a ratio change in transmitting power. For 4WD/AWD, it does not include transfer case or power take off subsystems. This test procedure deals with the aspect of conducting complete transmission and transaxle assembly testing.
Standard

Automatic Transmissions—Manual Control Sequence
2000-11-02
HISTORICAL
J915_200011
The scope and purpose of this SAE Recommended Practice is to provide a standard pattern or sequence for the manual control of automatic transmissions in passenger cars and light-duty trucks.
Standard

Planetary Gear(s)—Terminology
2000-05-16
HISTORICAL
J646_200005
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.
Standard

AUTOMOTIVE TRANSMISSION TERMINOLOGY
1997-07-01
HISTORICAL
J645_199707
The following listed definitions are intended to establish terminology and criteria for describing the various kinds of automotive transmissions. A specific arrangement may be described by a combination of several of these definitions.
Standard

TRANSMISSIONS—SCHEMATIC DIAGRAMS
1997-07-01
HISTORICAL
J647_199707
The following schematic diagrams exemplify the SAE recommended method of illustrating automotive transmission arrangements. They were developed to standardize industry practice and facilitate a clear understanding of the functional interrelations of the gearing, clutches, hydrodynamic drive unit, and other transmission components. Two variations of diagrams are used: transmission in neutral and in gear. For illustrative purposes, some typical transmissions are shown.
Standard

PASSENGER CAR AND LIGHT TRUCK AUTOMATIC TRANSMISSION AND AUTOMATIC TRANSAXLE TEST CODE
1996-01-01
HISTORICAL
J651_199601
To provide a means of obtaining the performance characteristics of automatic transmissions and automatic transaxles. It outlines dynamometer tests that map the steady-state characteristics over a range of operations of an automatic transmission/automatic transaxle and provides a method of presenting test data. This procedure must be followed, with similar test facilities so that results obtained from different laboratories are comparable. For this SAE Recommended Practice, the transmission is defined as the complete automatic transmission or transaxle assembly between the engine and the driveshaft(s) used to effect a ratio change in transmitting power. This test procedure deals with the aspect of conducting complete transmission and transaxle assembly testing. However, by its very nature a transmission should be viewed as a compilation of three major component systems: pump, torque converter, and gearbox (all ratio change elements).
Standard

TRANSMISSIONS—SCHEMATIC DIAGRAMS
1995-06-01
HISTORICAL
J647_199506
The following schematic diagrams exemplify the SAE recommended method of illustrating automotive transmission arrangements. They were developed to standardize industry practice and facilitate a clear understanding of the functional interrelations of the gearing, clutches, hydrodynamic drive unit, and other transmission components. Two variations of diagrams are used: Transmission in neutral and in gear. For illustrative purposes, some typical transmissions are shown.
Standard

FLYWHEELS FOR ENGINE-MOUNTED TORQUE CONVERTERS
1995-03-05
HISTORICAL
J927_199503
This SAE Recommended Practice defines flywheel configuration to promote standardization of flywheels for engine flywheel mounted torque converters. Tables 1A and 1B and Figure 1 give dimensions for flywheels mounted-type torque converters. For torque converters using drive ring overcenter type disconnect clutch, see SAE J620.
Standard

PARK STANDARD FOR AUTOMATIC TRANSMISSIONS
1993-06-01
HISTORICAL
J2208_199306
To provide a Recommended Practice for validating the function and integrity of an automatic transmission park mechanism with its associated control system and environment.
Standard

AUTOMATIC TRANSMISSIONS—MANUAL CONTROL SEQUENCE
1993-04-01
HISTORICAL
J915_199304
The scope and purpose of this SAE Recommended Practice is to provide a standard pattern or sequence for the manual control of automatic transmissions in passenger cars and light-duty trucks.
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