Microprocessor controlled system and method for increasing the fuel flow to the prime mover of a power delivery system having a continuously variable ratio transmission upon a commanded increase in

Patent · Tue Jun 10 00:00:00 EDT 1986

OSTI ID:5634556

Omitsu, T

A system is described for controlling the operation of a power delivery system including an engine of an engine-driven vehicle and a continuously variable ratio transmission coupled to the engine for delivering power from the engine to an output shaft, the engine having fuel delivery means for delivering a variable quantity of fuel thereto, wherein the duty cycle of the fuel delivery means is set to discrete levels which are directly proportional to the change in commanded system performance, the power delivery system being controlled by command means for commanding a desired power delivery system performance. The system consists of: actual system performance measuring means for measuring the actual performance of the power delivery system; ratio control means operatively coupled to the command means and the actual system performance measuring means for controlling the ratio of the transmission as a function of the desired system performance commanded by the command means and the measured actual system performance, the speed of the engine varying as a function of the transmission ratio; fuel function means defining a desired fuel requirement for the engine in relation to engine operating speed; speed measuring means for measuring the speed of the engine; fuel control means operatively coupled to the fuel function and the fuel delivery means for controlling the fuel delivery means only in accordance with the fuel requirement defined by the fuel function means, so that the fuel delivered to the engine is determined only by the speed thereof; and microprocessor controlled fuel increasing means, separate from the fuel control means, for increasing fuel flow to the fuel delivery means above that required by the fuel function means when the system performance commanded by the command means is increased.

• Assignee: Aisin Seiki Kabushiki Kaisha
• Patent Number(s): US 4593581
• OSTI ID: 5634556
• Resource Relation: Patent File Date: Filed date 24 Feb 1984
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
ENGINES
COMPUTERIZED CONTROL SYSTEMS
FUEL INJECTION SYSTEMS
MECHANICAL TRANSMISSIONS
VEHICLES
MICROPROCESSORS
PERFORMANCE
SPEED REGULATORS
VELOCIMETERS
VELOCITY
COMPUTERS
CONTROL EQUIPMENT
CONTROL SYSTEMS
ELECTRONIC CIRCUITS
EQUIPMENT
FUEL SYSTEMS
MACHINE PARTS
MEASURING INSTRUMENTS
MICROELECTRONIC CIRCUITS
330602* - Vehicle Design Factors- Engine-Transmission Matching