Control device for internal combustion engine and straddle...

Details Control device for internal combustion engine and straddle... Control device for internal combustion engine and straddle...

2011-07-05

2011-07-05

Cuff, Michael (Department: 4165)

Internal-combustion engines

Charge forming device

Diverse fuel supply

C123S00100A, C123S179300, C123S179180, C701S102000, C701S104000, C701S103000

Reexamination Certificate

active

07971580

ABSTRACT:
Startability of an internal combustion engine using a mixed fuel of gasoline and alcohol is improved. An intake passage of the engine has a main flow channel provided with a throttle valve and a bypass flow channel for bypassing the throttle valve. A bypass quantity adjusting mechanism adjusts the bypass quantity in the bypass flow channel. A control device detects or estimates the mixing ratio of alcohol of the fuel and controls the bypass quantity adjusting mechanism so that a bypass quantity before a first explosion is smaller than a bypass quantity after the first explosion when the mixing ratio of alcohol is equal to or more than a predetermined value.

REFERENCES:
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patent: 5301648 (1994-04-01), Uchinami
patent: 6718941 (2004-04-01), Asano et al.
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patent: 7523744 (2009-04-01), Ayame
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patent: 2007/0119391 (2007-05-01), Fried et al.
patent: 2007/0119416 (2007-05-01), Boyarski
patent: 2008/0035106 (2008-02-01), Stein
patent: 62-054987 (1987-11-01), None
patent: 62054987 (1987-11-01), None
European search report for corresponding European application 08253041.1-2311 lists the references above.

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