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US Patent 7398749 Method and device for controlling an internal combustion engine

Patent 7398749 was granted and assigned to Siemens Aktiengesellschaft on July, 2008 by the United States Patent and Trademark Office.

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Patent
Patent

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Current Assignee
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
7398749
Date of Patent
July 15, 2008
Patent Application Number
10549019
Date Filed
November 10, 2004
Patent Primary Examiner
‌
Ching Chang
Patent abstract

The invention relates to a method and device for controlling an internal combustion engine comprising an inlet pipe leading to a cylinder input where a gas input valve is placed. Said engine also comprises a drive for the gas input valve which makes it possible to adjust a gas input valve lift for at least two values. The engine also comprises an injection valve for metering fuel and a spark plug which controls the crankshaft angle of air-fuel mixture ignition. Said internal combustion engine is controlled in a following manner: a fuel is metered at least once during the intake stroke of a cylinder when the valve lift (VL) passes from one value to the other and at least one final injection is carried out in a dosing manner only when the valve lift (VL) is really carried out.

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