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Title: Control system and method for controllable output type hydraulic fluid pump of automatic transmission providing decreased pump output in association with the engine starting condition

Abstract

A control method of controlling output of a pump in a vehicle equipped with an internal combustion engine, a battery, a starter motor powered by the battery for starting up the engine, and a hydraulically actuated automatic transmission system including a hydraulic fluid pump for supplying pressurized fluid is described. The pump is adapted to be driven either by the engine or a pump drive motor powered by the battery. The method comprises the steps of: deciding whether or not the engine is being started by the starter motor; and decreasing the output of the pump when it is thus decided that the engine is being started.

Inventors:
; ;
Publication Date:
OSTI Identifier:
5978037
Patent Number(s):
US 4702083
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 30 Oct 1985
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; INTERNAL COMBUSTION ENGINES; START-UP; MECHANICAL TRANSMISSIONS; PUMPS; AUTOMATION; CONTROL SYSTEMS; ELECTRIC BATTERIES; ELECTRIC MOTORS; HYDRAULIC FLUIDS; HYDRAULICS; OPERATION; PRESSURIZING; ELECTROCHEMICAL CELLS; ENGINES; FLUID MECHANICS; FLUIDS; HEAT ENGINES; MACHINE PARTS; MECHANICS; MOTORS; WORKING FLUIDS; 330100* - Internal Combustion Engines

Citation Formats

Nakamura, S, Kubo, S, and Taga, Y. Control system and method for controllable output type hydraulic fluid pump of automatic transmission providing decreased pump output in association with the engine starting condition. United States: N. p., 1987. Web.
Nakamura, S, Kubo, S, & Taga, Y. Control system and method for controllable output type hydraulic fluid pump of automatic transmission providing decreased pump output in association with the engine starting condition. United States.
Nakamura, S, Kubo, S, and Taga, Y. Tue . "Control system and method for controllable output type hydraulic fluid pump of automatic transmission providing decreased pump output in association with the engine starting condition". United States.
@article{osti_5978037,
title = {Control system and method for controllable output type hydraulic fluid pump of automatic transmission providing decreased pump output in association with the engine starting condition},
author = {Nakamura, S and Kubo, S and Taga, Y},
abstractNote = {A control method of controlling output of a pump in a vehicle equipped with an internal combustion engine, a battery, a starter motor powered by the battery for starting up the engine, and a hydraulically actuated automatic transmission system including a hydraulic fluid pump for supplying pressurized fluid is described. The pump is adapted to be driven either by the engine or a pump drive motor powered by the battery. The method comprises the steps of: deciding whether or not the engine is being started by the starter motor; and decreasing the output of the pump when it is thus decided that the engine is being started.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {10}
}