Throttle actuator in automatic shift mechanism of geared transmi

Details Throttle actuator in automatic shift mechanism of geared transmi Throttle actuator in automatic shift mechanism of geared transmi

1987-12-17

1989-05-02

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

74781R, 74740, 74477, F02D 4114

Patent

active

048258318

ABSTRACT:
A throttle actuator in an automatic shift mechanism of a geared transmission for shifting to overdrive automatically includes first and second displacement members capable of being displaced relative to each other, the first displacement member being connected to the accelerator pedal and the second displacement member being connected to the engine throttle, a spring interposed between the first and second displacement members for displacing them in unison, actuating means attached to the second displacement member for displacing it relative to the first displacement member for displacing it relative to the first displacement member to open or close the engine throttle, and a CPU for controlling operation of the first actuating means. When a shift is made to overdrive, the CPU causes the actuating means to displace the second displacement member relative to the first displacement member, thereby opening or closing the engine throttle independently of operation of the accelerator pedal to control the rotational speed of the engine, whereby it is possible to engage or disengage the synchros in the transmission and to shift to overdrive automatically while the accelerator pedal remains depressed.

REFERENCES:
patent: 2548761 (1951-04-01), Armantrout
patent: 2946240 (1960-07-01), Kop
patent: 3477313 (1969-11-01), Ringe
patent: 3963091 (1976-06-01), Noddings et al.
patent: 4033200 (1977-07-01), Stockton
patent: 4082013 (1978-04-01), Dornfeld et al.
patent: 4750384 (1988-06-01), Belliveau

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