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Engine control system with throttle preload during cylinder deactivation

  • US 6,915,781 B2
  • Filed: 05/17/2002
  • Issued: 07/12/2005
  • Est. Priority Date: 05/17/2002
  • Status: Expired due to Term
First Claim
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1. An engine control system for a displacement on demand internal combustion engine, comprising:

  • a throttle preload signal generator that outputs a throttle preload area signal having a base portion and ramp out portion; and

    a combining circuit for combining said throttle preload area signal with a current throttle area signal to generate a throttle preload difference signal that adjusts throttle area to smooth transitions during at least one of cylinder activation and deactivation.

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