Engine controller and controlling method

Details Engine controller and controlling method Engine controller and controlling method

2004-08-13

2009-08-11

Vo, Hieu T (Department: 3747)

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

C123S361000, C701S110000

Reexamination Certificate

active

07571711

ABSTRACT:
When a throttle is fully open, a maximum torque set value is corrected based on the ratio between the maximum air volume set value under fully-open throttle conditions and the actual maximum air volume detected by an intake air volume meter such as an air flow sensor. Based on the corrected maximum torque set value, both the relation between the degree of accelerator opening and target torque and the relation between the target torque (target air volume) and the degree target throttle opening are corrected. Thus, even when various types of disturbances relating to torque error are generated, such as variations in air density generated in association with variations in temperature or altitude, variations over time such as contaminations of throttle chambers, or difference between machines such as engine bodies or auxiliary machines, it is possible to generate actual torque with respect to a target torque with a high degree of accuracy, while maintaining a desired relation between the degree of accelerator opening and the throttle opening.

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International Search Report dated Oct. 19, 2004 (Four (4) pages).
European Search Report dated Mar. 13, 2009 (Three (3) pages).

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