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Directional auxiliary intake injection for internal combustion engine

  • US 4,167,161 A
  • Filed: 06/27/1977
  • Issued: 09/11/1979
  • Est. Priority Date: 07/09/1976
  • Status: Expired due to Term
First Claim
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1. An internal combustion engine, comprising:

  • a spark plug gap within a combustion chamber;

    an auxiliary injection port having a directional outlet adjacent the spark plug gap for injecting a charge of a gas such as air, lean fuel mixture, or exhaust gas;

    a main intake passage for supplying fuel mixture to the combustion chamber via a main intake valve;

    a throttle valve disposed in the main intake passage for controlling the fuel mixture flow rate;

    an auxiliary intake passage communicating with the injection port and disposed independently of the main intake passage;

    a valve disposed within the auxiliary intake passage; and

    means for controlling said valve in response to the movements of the throttle valve such that said valve is opened to a maximum degree when the throttle valve is opened to an intermediate position, to thereby enhance the swirling effect within the combustion chamber and improve the combustibility of the mixture within the chamber over a wide range of engine running conditions, including idling and light load operation.

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