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Patent Searching and Data


Title:
SPEED CHANGE CONTROL METHOD OF AUTOMATIC TRANSMISSION FOR CAR
Document Type and Number:
Japanese Patent JPS61163031
Kind Code:
A
Abstract:
PURPOSE:To perform adequate speed change control in view of the power performance and fuel economy by using a transmission transferring among all three speed change steps and performing shift control according to the speed change control characteristics in response to the engine output and car speed. CONSTITUTION:An electronic control device 60 feeds on/off signals to a direct- coupled clutch solenoid valve 46 and a sub-transmission solenoid valve 48 with a predetermined duty factor to a line oil pressure solenoid valve 42 and a main transmission solenoid valve 51. The are controlled by the information from a throttle opening sensor 61, a car speed sensor 62, a pattern select switch 63, and a shift position sensor 64. When the output pattern is set, if the car speed is the first predetermined value or more, the up-shift control is performed among all three speed change steps according to the predetermined speed change control characteristics putting much emphasis on the power performance.

Inventors:
HAMANO YUKIO
TAGA YUTAKA
Application Number:
JP454585A
Publication Date:
July 23, 1986
Filing Date:
January 14, 1985
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
B60W10/04; B60W10/06; B60W10/10; B60W10/101; B60W10/11; F02D29/00; F16H59/10; F16H61/00; F16H61/10; F16H63/44; (IPC1-7): B60K41/14; F02D29/00; F16H5/66