System and method for boosted direct injection engine

System and method for boosted direct injection engine

  • CN 101,042,085 B
  • Filed: 09/18/2006
  • Issued: 10/30/2013
  • Est. Priority Date: 03/20/2006
  • Status: Active Grant
First Claim
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1. the operation method of a motor, this motor has a cylinder, and this cylinder is with at least one suction valve and at least one outlet valve, and the method comprises:

  • Carry out the burn cycle in the cylinder, wherein closing of outlet valve occurs in after the INO, and it is overlapping therefore to produce the valve opening and closing time;

    Make the inlet air supercharging be higher than exhaust pressure, wherein when described INO, described inlet air through supercharging is introduced into described cylinder, and at described valve opening and closing time overlapping period, described suction valve and outlet valve all are opened, and outlet valve is flow through at least first portion of the inlet air of the described process supercharging that is introduced into;

    To arrive described cylinder at the direct injection of described combustor inner cylinder, wherein said fuel sprays begins to betide after the described exhaust valve closure, and the fuel of described direct injection mixes with at least second portion of the described inlet air that passes through supercharging that is introduced into;

    In described cylinder with enriched air-fuel ratio described mixture that burns;

    AndIn three usefulness catalyzer, process described exhaust mixture,The exhaust of wherein discharging from described cylinder with flow through outlet valve described be introduced into through the air-fuel ratio of the mixture of the described first portion of the inlet air of supercharging roughly near stoichiometric relationship.

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