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Title:
ADAPTATION METHOD FOR INJECTION VALVE CONTROL AND CYLINDER BALANCING
Document Type and Number:
WIPO Patent Application WO/2012/016763
Kind Code:
A3
Abstract:
The invention relates to a method (61) for operating an internal combustion engine (11) having a plurality of combustion chambers (15), at least one combustion chamber (15) being assigned an injection valve (13) for injecting fuel (mf) into the combustion chamber (15), wherein, for a least one combustion chamber (15), an air ratio (λ) that is individual to the combustion chamber is adjusted and/or, for at least one combustion chamber (15), a torque (M) that is individual to the combustion chamber is determined. In order to specify a method (61) for operating an internal combustion engine (11), wherein faulty adaptations can be avoided to the greatest possible extent, it is proposed that, for at least one injection valve (13), an activation period (TA) of the injection valve (15) is adapted (A) by measuring or determining a valve opening period (T) of the injection valve (15) in such a way that tolerances of the injection valve (15) with respect to a relationship between the activation period (TA) and the valve opening period (T) are at least substantially compensated.

Inventors:
HESS, Werner (Zorndorfer Str. 23, Stuttgart, 70499, DE)
RIES-MUELLER, Klaus (Asternweg 1, Bad Rappenau, 74906, DE)
Application Number:
EP2011/060707
Publication Date:
May 31, 2012
Filing Date:
June 27, 2011
Export Citation:
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Assignee:
ROBERT BOSCH GMBH (Postfach 30 02 20, Stuttgart, 70442, DE)
HESS, Werner (Zorndorfer Str. 23, Stuttgart, 70499, DE)
RIES-MUELLER, Klaus (Asternweg 1, Bad Rappenau, 74906, DE)
International Classes:
F02D41/14; F02D41/00; F02D41/24; F02P5/15; F02D35/02
Domestic Patent References:
WO2006092389A12006-09-08
Foreign References:
DE4308811A11994-01-27
EP1169560A12002-01-09
DE102009027290A12010-04-15
US5515828A1996-05-14
DE102006002738A12007-08-02
EP1431557A22004-06-23
Attorney, Agent or Firm:
ROBERT BOSCH GMBH (Postfach 30 02 20, Stuttgart, 70442, DE)
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