Examples are directed to a fuel injection device positioned in a cylinder liner. In one example, a cylinder includes a combustion chamber which is jointly formed by a piston crown of a piston, by a cylinder barrel which laterally delimits the combustion chamber, and by a cylinder head. The cylinder includes an injection device positioned in the cylinder barrel for direct introduction of fuel into the combustion chamber, which injection device has at least one opening which, during a course of an injection process, is configured to be activated to introduce fuel into the combustion chamber, the injection device terminating flush, at a combustion chamber side, with the cylinder barrel.

The magnetic valve recoil device is intended for a valve-type ignition pre-chamber having a stratification cavity connected by a stratification pipe, which a stratification valve can close, to a combustion chamber housing a primary charge, a stratification injector, and an ignition unit leading to the cavity in order to inject and ignite an initiator charge so as to ignite the primary charge via a torch ignition pre-chamber formed by the stratification valve with the stratification pipe when it is not closing the latter, the valve being otherwise kept in contact with the pipe by a magnetic field created by a magnetic field source.

The magnetic valve recoil device is intended for a valve-type ignition pre-chamber having a stratification cavity connected by a stratification pipe, which a stratification valve can close, to a combustion chamber housing a primary charge, a stratification injector, and an ignition unit leading to the cavity in order to inject and ignite an initiator charge so as to ignite the primary charge via a torch ignition pre-chamber formed by the stratification valve with the stratification pipe when it is not closing the latter, the valve being otherwise kept in contact with the pipe by a magnetic field created by a magnetic field source.

A fuel injector and method are disclosed wherein an injector body defines a cavity and passages from an inlet at the cavity through an outside surface of the injector body. Each passage may have a first inner contour at a first angle and a second inner contour at a second angle. An injector pin with a fuel pass-though volume may be movable within the cavity to selectively overlap an outlet of the pass-through volume with an inlet of the passages to selectively direct fuel in varying quantities along the first second inner contours.

Fuel management system for enhanced operation of a spark ignition gasoline engine. Injectors inject an anti-knock agent such as ethanol directly into a cylinder. It is preferred that the direct injection occur after the inlet valve is closed. It is also preferred that stoichiometric operation with a three way catalyst be used to minimize emissions. In addition, it is also preferred that the anti-knock agents have a heat of vaporization per unit of combustion energy that is at least three times that of gasoline.

The invention relates to an at least partly stratified (such as at least partly dual stratified) charge combustion engine, especially CAI (combustion assisted ignition), HCC, HCSI and HCCI engine, in which the combustion of a hydrocarbon containing fuel generating a flame emitting photon is operated in a chamber with a wall provided with a cerium oxide-carbon containing coating, said coating further comprising at least comprising oxides of the followings elements Pr, Nd, La and at least Y and/or Zr. The engine of the invention enables a catalytic reduction of NOx exhaust rate.

The invention relates to an at least partly stratified (such as at least partly dual stratified) charge combustion engine, especially CAI (combustion assisted ignition), HCC, HCSI and HCCI engine, in which the combustion of a hydrocarbon containing fuel generating a flame emitting photon is operated in a chamber with a wall provided with a cerium oxide-carbon containing coating, said coating further comprising at least comprising oxides of the followings elements Pr, Nd, La and at least Y and/or Zr. The engine of the invention enables a catalytic reduction of NOx exhaust rate.

An engine control apparatus is configured to control a direct injection engine that includes a combustion chamber and an intake system including an intake port. The engine control apparatus includes a cleaning component sensor and a mode controller. The cleaning component sensor is provided in a fuel system and configured to detect a cleaning component included in fuel. The fuel system includes a fuel tank and an injector and is configured to supply the fuel to the combustion chamber. The mode controller is configured to cause execution of a cleaning mode by the direct injection engine, under a state in which the cleaning component included in the fuel is higher than a threshold. The cleaning mode includes increasing an amount of a fuel-air mixture flowing back from the combustion chamber to the intake port.

Disclosed is a valve ignition prechamber for an internal combustion engine which includes a combustion chamber in which a main load more or less diluted with a neutral gas is ignited, the prechamber including a lamination cavity into which an ignition unit opens and in which a lamination injector can inject under pressure an easily flammable pilot load, a lamination valve being able to close all or part of the lamination duct, in particular under the effect of the pressure of the gases prevailing in the combustion chamber.

In an internal combustion engine which performs a homogeneous lean combustion mode and a stratified lean combustion mode, there is provided a new internal combustion engine control device capable of obtaining a stable combustion state by decreasing influences of delay of an air flow and a degree of change of a transient state and smoothly performing switching between the homogeneous lean combustion mode and the stratified lean combustion mode. Accordingly, in the present invention, when switching between the stratified lean mode in which a compression stroke injection is performed by a direct injection injector 7 and the homogeneous lean combustion mode in which an intake stroke injection is performed by the direct injection injector 7 is performed, a predetermined delay time t is provided from at least a switching operation of a tumble control valve 6, a switching operation between the compression stroke injection and the intake stroke injection is performed, and the delay time t is set so as to correspond to a magnitude of the degree of change L of the transient state. A switching timing between the compression stroke injection and the intake stroke injection is controlled according to the flow delay of an air control system such as the tumble control valve 6 and the degree of change L of the transient state, and thus, it is possible to improve combustion stability in a combustion chamber.