Automatic transmission controls with multiple downshift off-highway mode

Patent · Mon Mar 17 23:00:00 EST 1986

OSTI ID:5757167

Speranza, D; Lane, E J; Markyvech, R K

This patent describes an improved automatic transmission system for vehicles having a throttle-controlled engine, an operator actuated throttling control means and a transmission having gear ratio combinations selectively engageable between a transmission input shaft and a transmission output shaft. The transmission input shaft is operatively connected to the engine, the transmission system including an information processing unit having means for receiving input signals including (1) an input signal indicative of the position of the throttle controlling means, (2) an input signal indicative of the rotational speed of the engine, and (3) an input signal indicative of the speed of the vehicle, the processing unit including means for processing the input signals in accordance with a program to select a desirable gear ratio for a given combination of input signals and for generating output signals whereby the transmission system is operated in accordance with the program, and means associated with the transmission effective to actuate the transmission to effect engagement of one of the gear ratio combinations in response to the output signals from the processing unit.

• Assignee: Eaton Corp., Cleveland, OH
• Patent Number(s): US 4576065
• OSTI ID: 5757167
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
COMPUTER CALCULATIONS
COMPUTERIZED CONTROL SYSTEMS
CONTROL EQUIPMENT
CONTROL SYSTEMS
DATA PROCESSING
EQUIPMENT
GEARS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
POSITIONING
PROCESSING
SHAFTS
SIGNALS
SPEED REGULATORS
VEHICLES
VELOCITY