Internal-combustion engines – Engine speed regulator – Open loop condition responsive
Patent
1997-10-21
1999-07-13
Argenbright, Tony M.
Internal-combustion engines
Engine speed regulator
Open loop condition responsive
12333923, F02D 900, F02D 1100
Patent
active
059212187
ABSTRACT:
A device for preventing knock in an engine includes a throttle valve controlling air flow to a combustion chamber of said engine via a first air flow passage. A first throttle assembly is selectively connected to a second throttle assembly, and the second throttle assembly is operationally connected to the throttle valve. The first throttle assembly receives a mechanical input to, in turn, control the throttle valve. A solenoid valve selectively controls an actuator according to whether the solenoid valve is in an off state or in an on state. When the solenoid valve is in an off state, the actuator moves the first throttle assembly out of a connection with the second throttle assembly in the off state of the actuator. When the solenoid valve is in the on state, the actuator moves the first throttle assembly into a connection with the second throttle assembly. The device further includes a sensor for detecting if the engine is or is not in an off-idle state, and a controller which receives output from the sensor and controls the solenoid valve based on the output from the sensor. The controller places the solenoid valve into its off state when the sensor detects the off-idle state. The device additionally includes an idle speed actuator system controlling air flow to the combustion chamber of the engine via a second air flow passage.
REFERENCES:
patent: 5211148 (1993-05-01), Furuya et al.
patent: 5305722 (1994-04-01), Fukui
patent: 5343840 (1994-09-01), Wataya et al.
patent: 5404854 (1995-04-01), Kamabora et al.
patent: 5778853 (1998-07-01), Saito
Argenbright Tony M.
Hyundai Motor Company Ltd.
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