Device and Method for Controlling the Start of an Internal Combustion Engine
AssigneeHitachi Astemo, Ltd.
InventorsNaoki YONEYA, Masayuki SARUWATARI
Life of this patent
Estimating the term…
Abstract
The present invention relates to a device and a method for controlling the start of an internal combustion engine, wherein the internal combustion engine is equipped with an ignition device comprising a fuel-fed prechamber to ignite an air-fuel mixture in a main combustion chamber. In order to reduce the emissions of the internal combustion engine during engine start a prechamber heating operations is performed by injecting a predetermined amount of fuel into the prechamber and igniting an air-fuel-mixture therein, while the main fuel injector is deactivated during at least a first engine cycle after engine start request.
Claims17
-16. (canceled)
Control unit for controlling the start of an internal combustion engine having at least one cylinder, at least one main combustion chamber, at least one intake port, at least one main fuel injector and at least one ignition device configured to ignite an air-fuel-mixture inside the main combustion chamber,
- wherein the ignition device comprises a spark plug, a prechamber fuel injector and a prechamber, connected to the main combustion chamber via at least one orifice in a prechamber wall,
- wherein the control unit is configured to control the ignition device to perform a prechamber heating operation by injecting a predetermined amount of fuel into the prechamber and igniting an air-fuel-mixture therein, while the main fuel injector is deactivated during at least a first engine cycle after engine start request.
Method for controlling the start of an internal combustion engine having at least one cylinder, at least one main combustion chamber, at least one intake port, at least one main fuel injector, at least one ignition device configured to ignite an air-fuel-mixture inside the main combustion chamber and at least one control unit,
- wherein the ignition device comprises a spark plug, a prechamber fuel injector and a prechamber, connected to the main combustion chamber via at least one orifice in a prechamber wall,
- wherein the control unit controls the ignition device to perform a prechamber heating operation by injecting a predetermined amount of fuel into the prechamber and igniting an air-fuel-mixture therein, while the main fuel injector is deactivated during at least a first engine cycle after engine start request.
Dependencies are inferred from the claim text.