System and method for reducing pressure in an intake manifold of an internal combustion engine

System and method for reducing pressure in an intake manifold of an internal combustion engine

  • CN 101,070,784 B
  • Filed: 05/11/2007
  • Issued: 06/05/2013
  • Est. Priority Date: 05/11/2006
  • Status: Active Grant
First Claim
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1. depressurized system that is used for internal-combustion engine, this system comprises:

  • The intake manifold of being combined with internal-combustion engine;

    The selectivity fluid is connected to the white-out subtense angle of this intake manifold, and this white-out subtense angle is by turning round for the pressure that reduces in internal combustion engine start process intake manifold from this intake manifold white-out gaseous fluid;

    The controller of being combined with internal-combustion engine;

    Wherein this white-out subtense angle also comprises white-out storage tank and storage tank control valve, and this storage tank control valve is connected to intake manifold with white-out storage tank selectivity fluid, and storage tank control valve and controller keep the electronics communications and liaison;

    Wherein, the storage tank control valve is opened when internal combustion engine operation, thereby reduces the pressure in the white-out storage tank;

    AndWherein, the storage tank control valve is opened in the process that internal-combustion engine starts subsequently, thereby reduces the pressure in intake manifold;

    Manifold pressure sensor, this manifold sensor and controller electronics communications and liaison, and be arranged to generate the mainfold presure signal of indicating pressure in intake manifold;

    Wherein,, open the storage tank control valve, thereby reduce the pressure in the white-out storage tank during lower than predetermined air-distributor pressure threshold value when the pressure in internal combustion engine operation and mainfold presure signal designation intake manifold;

    Pressure in pressure of storage tank signal designation white-out storage tank is less than predetermined pressure of storage tank threshold value, or internal-combustion engine is when cutting out, and the storage tank control valve is closed.

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