Load control device for engine of work vehicle

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7810323
APP PUB NO 20090101101A1
SERIAL NO

10578315

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A device for use in a work vehicle such as a wheel loader, capable of reliably preventing engine stall due to rapid application of high hydraulic load, without causing problems such as deterioration in fuel efficiency or vehicle performance and waste of energy. When determining that an engine speed detected by the engine speed detecting sensor has been decreased to the threshold value or lower, the controller implements a control to reduce the absorption torque of the variable displacement hydraulic pump. The hydraulic load is thus shifted to a low hydraulic load line. The change of the hydraulic load from the high hydraulic load to the low hydraulic load gives a margin to the current torque of the engine with respect to the low hydraulic load. Consequently, the actual speed of the engine is increased to return onto the regulation line, exceeding the threshold value.

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Patent Owner(s)

Patent OwnerAddress
KOMATSU LTD2-3-6 AKASAKA MINATO-KU TOKYO 1078414 ?1078414

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iwamoto, Yuuichi Komatsu, JP 5 80

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