×

INTERNAL COMBUSTION ENGINE

  • US 20150167578A1
  • Filed: 12/08/2014
  • Published: 06/18/2015
  • Est. Priority Date: 12/13/2013
  • Status: Active Grant
First Claim
Patent Images

1. An internal combustion engine comprising:

  • a variable valve mechanism;

    a spark plug; and

    a control device,the control device controls a first control amount of the variable valve mechanism and a second control amount of the spark plug, the first control amount and the second control amount in a homogeneous lean operation region are different from the first control amount and the second control amount in a non-lean operation region, the homogeneous lean operation region is set in a first load region, the non-lean operation region is a stoichiometric or rich operation region set in a second load region, the second load region is higher than the first load region,the control device performs control, in other operation region set in a third load region, so that an air-fuel ratio of the internal combustion engine is equal to an air-fuel ratio of non-lean operation region, the first control amount of the variable valve mechanism is equal to a control amount of the homogeneous lean operation region and the second control amount of the spark plug is equal to a control amount of the non-lean operation region in accordance with an operation amount of an accelerator pedal, the third load region is determined between the first load region and the second load region.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×