×

Variable displacement diesel engine

  • US 5,813,383 A
  • Filed: 09/04/1996
  • Issued: 09/29/1998
  • Est. Priority Date: 09/04/1996
  • Status: Expired due to Fees
First Claim
Patent Images

1. In a method of operating a variable displacement Diesel engine including:

  • providing a Diesel engine having a plurality of cylinders with pistons movable within said cylinders;

    said pistons connected to a crank shaft;

    said cylinders at least partially defining combustion chambers in said engine;

    supplying Diesel fuel to said combustion chambers;

    activating glow plugs for heating said combustion chambers to minimum operating temperature;

    operating valve means for introducing air and fuel for combustion into said combustion chambers, and for allowing combustion gasses to exist from said combustion chamber;

    applying a load to said crank shaft;

    the improvement comprising;

    under computer control reducing the number of operative cylinders under reduced load operating conditions including discontinuing the supply of fuel to selected cylinders; and

    under increased load conditions, computer controlled activating additional cylinders, including providing said deactivated cylinders with fuel for combustion; and

    computer controlled activating the respective glow plugs of the previously inactive cylinders if the temperature of said inactive cylinders has become below a minimum operating temperature, to heat up the deactivated cylinders and then re-introducing fuel into said deactivated cylinders.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×