Engine speed control system for snow remover

Details Engine speed control system for snow remover Engine speed control system for snow remover

2006-08-01

2006-08-01

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S114000, C123S478000, C123S350000

Reexamination Certificate

active

07085645

ABSTRACT:
In an engine speed control system for a snow remover, the engine speed is controlled at the desired speed by driving the throttle valve with an electric motor, the engine output power corresponding to the load acting on the snow removal mechanism or travel mechanism is estimated based on the throttle position and the engine speed, and the desired speed is increased in stepwise fashion to a higher value when the estimated engine output power exceeds first through third ascending threshold values. With this, the engine speed maintained when a small load is acting on the snow removal mechanism or travel mechanism can be set to a lower value, whereby the noise level can be reduced and fuel efficiency improved compared with the prior art wherein a mechanical governor is used to adjust the engine speed.

REFERENCES:
patent: 5462031 (1995-10-01), Kai
patent: 2005/0154521 (2005-07-01), Katsuragawa et al.
patent: 2001-020238 (2001-01-01), None
patent: 2002-316575 (2002-10-01), None

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