| 摘要 |
The invention relates to a method for operating an internal combustion engine ( 1 ) especially of a motor vehicle, wherein fuel, which is to be injected into a combustion chamber ( 4 ) or into an intake manifold ( 7 ) of the engine ( 1 ), is present in a pressure store ( 13 ) at a variable injection pressure (p). The injection pressure (p) in the pressure store ( 13 ) is adjusted in dependence upon the temperature (T) of the engine ( 1 ) in order to obtain an optimal operation of the engine ( 1 ) with respect to the lowest possible consumption of fuel and a lowest possible exhaust-gas emission in specific operating states of the engine ( 1 ), for example, after a cold start or during a warm-up phase. Preferably, the injection pressure (p) is increased at a temperature (T) of the engine ( 1 ) below the operating temperature thereof. In addition, the injection time point can be adjusted to later time points at low temperatures (T) of the engine ( 1 ).
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