Variable intake system monitoring apparatus

Details Variable intake system monitoring apparatus Variable intake system monitoring apparatus

2006-10-03

2006-10-03

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Intake manifold

Manifold having plenum

Reexamination Certificate

active

07114477

ABSTRACT:
Variable intake systems are provided that include a variable intake valve shaft, potentiometer, pneumatic actuator, Manifold Absolute Pressure sensor, Throttle Position Sensor and controller. Preferred systems of the invention can monitor whether valves of a variable intake system are properly working, thereby stabilizing the operation of the variable intake system in a simplified manner and at low costs.

REFERENCES:
patent: 5168954 (1992-12-01), Nakaniwa et al.
patent: 5722365 (1998-03-01), Sadakane et al.
patent: 6695279 (2004-02-01), Takahashi et al.

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