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CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

  • US 20130291835A1
  • Filed: 01/20/2011
  • Published: 11/07/2013
  • Est. Priority Date: 01/20/2011
  • Status: Active Grant
First Claim
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1. A control device for an internal combustion engine, wherein the engine includes a variable valve device, which includes:

  • a variable mechanism having a first rotating body, which rotates in synchronization with one of a crankshaft and a camshaft, and a second rotating body, which rotates in synchronization with the other, the variable mechanism rotating the rotating bodies relative to each other to change a valve timing of a valve driven by the camshaft to open and close, anda fixation mechanism capable of fixing the valve timing at a specific timing that is between a most retarded timing and a most advanced timing by limiting the relative rotation between the rotating bodies, whereina period elapsed from when cranking accompanied by fuel injection is started is defined as a post-start period,the control device is configured to execute start-up failure processing, which addresses a state where the valve timing is at a timing different from the specific timing, when the post-start period is equal to or longer than a first predetermined period α and

    an engine rotation speed is equal to or slower than a predetermined value, that is, when a start-up failure is caused in which the internal combustion engine does not shift to a complete combustion state, andthe start-up failure processing reduces a fuel injection amount after when it is determined that a start-up failure has been caused to be smaller than the fuel injection amount of when it is determined that a start-up failure has been caused.

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