Electrically-actuated throttle device for general-purpose...

Details Electrically-actuated throttle device for general-purpose... Electrically-actuated throttle device for general-purpose...

2007-02-06

2007-02-06

Argenbright, T. M. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

C123S179180, C123S438000, C261S039100, C261SDIG074

Reexamination Certificate

active

11439120

ABSTRACT:
In an electrically-actuated throttle device for a general-purpose engine, supply of current to the throttle motor and choke motor for moving the throttle valve and choke valve is started when cranking is detected after activation (power-up) of the electronic control unit (ECU). In other words, supply of current is not started simultaneously with activation of the ECU but is delayed until cranking is detected. Owing to this configuration, no power of the battery is consumed unnecessarily between power-up and starting of the engine. Decrease in the power supplied to the starter motor is therefore prevented, thereby improving the starting performance of the engine. In addition, even if starting of the engine is not commenced after power-up, the battery is not likely to be excessively discharged.

REFERENCES:
patent: 2005/0199217 (2005-09-01), Kamimura et al.
patent: 2005/0200030 (2005-09-01), Kamimura et al.
patent: 2005/0205039 (2005-09-01), Kamimura et al.
patent: 04-116256 (1992-04-01), None

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