Fuel pressure control apparatus for an internal combustion engine
First Claim
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1. A control apparatus for an engine, comprising:
- a control portion controlling a fuel injection mechanism injecting fuel;
a correcting portion correcting a fuel injection amount;
an adjusting portion executing one of first control for adjusting a pressure of said fuel to be a first pressure and second control for adjusting the pressure to be a second pressure lower than said first pressure; and
a switching portion switching from said first control to said second control when a correction amount for decreasing the fuel injection amount is greater than a predetermined correction amount.
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Abstract
The engine ECU executes a program including the step of setting an upper limit guard value of a fuel pressure by executing low fuel pressure control in the case where a low fuel pressure control execution condition is satisfied with fulfillment of conditions that execution of the low fuel pressure control is permitted, that engine speed NE is lower than a threshold value, and that the atmospheric pressure is higher than a threshold value, and the step of controlling the fuel pressure to be a target fuel pressure within a range not exceeding the upper limit guard value.
13 Citations
5 Claims
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1. A control apparatus for an engine, comprising:
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a control portion controlling a fuel injection mechanism injecting fuel; a correcting portion correcting a fuel injection amount; an adjusting portion executing one of first control for adjusting a pressure of said fuel to be a first pressure and second control for adjusting the pressure to be a second pressure lower than said first pressure; and a switching portion switching from said first control to said second control when a correction amount for decreasing the fuel injection amount is greater than a predetermined correction amount. - View Dependent Claims (2)
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3. A control apparatus for an engine, comprising:
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control means for controlling fuel injection means for injecting fuel; correcting means for correcting a fuel injection amount; adjusting means for executing one of first control for adjusting a pressure of said fuel to be a first pressure and second control for adjusting the pressure to be a second pressure lower than said first pressure; and means for switching from said first control to said second control when a correction amount for decreasing the fuel injection amount is greater than a predetermined correction amount. - View Dependent Claims (4)
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5. A control apparatus for an engine, comprising an ECU controlling an injector injecting fuel,
said ECU being configured to correct a fuel injection amount, execute one of first control for adjusting a pressure of said fuel to be a first pressure and second control for adjusting the pressure to be a second pressure lower than said first pressure, and switch from said first control to said second control when a correction amount for decreasing the fuel injection amount is greater than a predetermined correction amount.
Specification