Throttle pedal feedback apparatus for economical engine operatio

Details Throttle pedal feedback apparatus for economical engine operatio Throttle pedal feedback apparatus for economical engine operatio

1979-08-20

1982-07-06

Lazarus, Ronald H.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

123389, 123342, F02D 1108

Patent

active

043377432

ABSTRACT:
An apparatus is disclosed whereby a sudden perceptible resistance is applied to the accelerator pedal of an automobile vehicle when the intake manifold vacuum pressure level decreases below a preselected pressure. A pneumatic motor is operated by a throttle valve that mixes the ambient and manifold vacuum. The motor controls the relative position of a helical spring relative to the throttle control and allows the throttle control and spring to engage abruptly when the manifold vacuum pressure is below the preselected level and withdraws the spring from contact with the throttle control when the manifold vacuum pressure exceeds that pressure level.

REFERENCES:
patent: 2782025 (1957-02-01), Olson
patent: 3237527 (1966-03-01), Martin
patent: 4029475 (1977-04-01), Nuss
patent: 4089307 (1978-05-01), Nakamura
patent: 4128087 (1978-12-01), Hayashi

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