Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1988-06-16
1990-01-30
Wright, Dirk
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
3644241, B60K 4118
Patent
active
048965693
ABSTRACT:
An electronically controlled automatic transmission in which the transmission gear stage and engaging or disengaging operations of a lock-up clutch in a torque converter are determined on the basis of the number of transmission output revolutions and the throttle opening and in which a shifting solenoid and a lock-up solenoid incorporated in the transmission are controlled in. The transmission has a sensor for detecting an input rotational speed. The number of transmission input revolutions output from this sensor and the number of transmission output revolutions are compared with each other, thereby detecting malfunction of a transmission output speed sensor. If the transmission output speed sensor malfunctions, gearshift and lock-up control are performed on the basis of the number of transmission output revolutions calculated from the number of transmission input revolutions and the corresponding gear ratio. The transmission also has an malfunction alarm device for issuing an alarm indicating malfunction of the transmission output speed sensor in response to a signal output from an electronic control device. When both the transmission output speed sensor and the transmission input speed sensor operate normally, the number of revolutions output from the transmission output speed sensor and the number of transmission output revolutions calculated by the electronic control device from the number of transmission input revolutions and the gear ratio are compared, thereby detecting malfunction such as slip failure of a friction member in the transmission or shift failure.
REFERENCES:
patent: 4561055 (1985-12-01), McKee
patent: 4635508 (1987-01-01), Tatsumi
patent: 4667541 (1987-05-01), Shimaoka et al.
patent: 4685051 (1987-08-01), Hattori et al.
patent: 4698764 (1987-10-01), Inagaki et al.
patent: 4722242 (1988-02-01), Miura et al.
patent: 4779490 (1988-10-01), Milunas et al.
Ito Yasunobu
Mizuno Yasuo
Aisin AW Kabushiki Kaisha
Wright Dirk
LandOfFree
Electronically controlled automatic transmission and method of c does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electronically controlled automatic transmission and method of c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronically controlled automatic transmission and method of c will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1918063