Engine monitor/control microprocessor for continuously variable power train

Patent · Tue Mar 03 00:00:00 EST 1987

OSTI ID:7082570

Cornell, C R; Olson, D J

A drive train system is described for an engine-powered vehicle and including efficiency control, comprising: a variable range transmission having a rotating output and providing a continuously variable range of speed reduction rations for adjusting the load on the engine and the speed of the vehicle. The variable range transmission includes a transmission pump and motor hydraulic units with variable displacement to vary their speed ration, and manual means for varying the output speed and torque of the variable speed output; electrically controlled hydraulic means to vary the displacement of the hydraulic units and correspondingly vary the variable range transmission output speed and torque; a fixed range transmission having a plurality of fixed, specific reduction ratios providing corresponding speed ranges; a first manually operable selector for selecting any of the speed reduction ratios of the variable transmission in the continuously variable range thereof; means responsive to the first selector for generating a first signal corresponding to the speed reduction ratio setting of the first selector; and a second manually operable selector coupled with the engine for varying the power supplied by the engine and having a continuous range of power settings.

• Assignee: J.I. Case Co., Racine, WI
• Patent Number(s): US 4648040
• OSTI ID: 7082570
• Resource Relation: Patent File Date: Filed date 21 Feb 1984
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
ENGINES
COMPUTERIZED CONTROL SYSTEMS
MECHANICAL TRANSMISSIONS
VEHICLES
EFFICIENCY
ELECTRIC MOTORS
ELECTRONIC CIRCUITS
HYDRAULIC EQUIPMENT
MEMORY DEVICES
MICROPROCESSORS
MONITORING
ROTATION
SIGNALS
SPEED REGULATORS
TORQUE
VELOCITY
COMPUTERS
CONTROL EQUIPMENT
CONTROL SYSTEMS
EQUIPMENT
MACHINE PARTS
MICROELECTRONIC CIRCUITS
MOTION
MOTORS
330602* - Vehicle Design Factors- Engine-Transmission Matching