In an internal combustion engine, for the operation at part-load, a heat exchanger collects heat from the exhaust gas and re-injects the collected heat into the intake gas being at an intermediate stage (p.sub.3c) of the compression. The exhaust gases are cooled down from point Q.sub.81c to point Q.sub.61c. The intake gases are heated up from point Q.sub.33c to point Q.sub.43c. The average combustion temperature is higher while the exhaust gas temperature is lowered, wherefore the yield is definitely increased.

An object of the present invention is to provide an engine system control device capable of stabilizing a combustion state, while improving fuel economy by performing intake air heating. According to the present invention, there is provided an engine system control device which controls an engine system including an engine configured to combust air-fuel mixture, an intake air path configured to take air to the engine, and an intake air heating mechanism configured to heat the intake air, wherein a heating amount of the intake air is controlled depending on a combustion speed of the air-fuel mixture.

A fuel vaporizer including fuel injectors is described herein. The vaporizer includes a housing having a plurality of baffles defining a plurality of chambers, with each of the plurality of baffles defining an aperture between adjacent chamber, and the apertures define a flow path from the air inlet, through the plurality of chambers, and to the vapor outlet. A conduit extends through the baffles and chambers, and the conduit is adapted to accept a flow exhaust gas and transfer thermal energy from the exhaust gas to an airflow along the flow path A fuel injector is positioned in the housing to inject fuel into the flow path in the first chamber, the thermal energy from the conduit vaporizing the fuel injected into the airflow and producing the flow of vaporized fuel. The fuel vaporizer may include a heat exchanger pre-heating the airflow and electric heating elements supplementing the conduit heating.

A fuel vaporizer including fuel injectors is described herein. The vaporizer includes a housing having a plurality of baffles defining a plurality of chambers, with each of the plurality of baffles defining an aperture between adjacent chamber, and the apertures define a flow path from the air inlet, through the plurality of chambers, and to the vapor outlet. A conduit extends through the baffles and chambers, and the conduit is adapted to accept a flow exhaust gas and transfer thermal energy from the exhaust gas to an airflow along the flow path A fuel injector is positioned in the housing to inject fuel into the flow path in the first chamber, the thermal energy from the conduit vaporizing the fuel injected into the airflow and producing the flow of vaporized fuel. The fuel vaporizer may include a heat exchanger pre-heating the airflow and electric heating elements supplementing the conduit heating.

The present invention provides a novel apparatus and method for the gasification of liquid petroleum fuel (gasoline), that has been atomized and emulsified with atmospheric air, by implementing a multi-Stage Heat Exchanger System.

The present invention provides a novel apparatus and method for the gasification of liquid petroleum fuel (gasoline), that has been atomized and emulsified with atmospheric air, by implementing a multi-Stage Heat Exchanger System.

A split cycle internal combustion engine includes a combustion cylinder accommodating a combustion piston and a compression cylinder accommodating a compression piston. The engine also includes a controller arranged to receive an indication of a parameter associated with the combustion cylinder and/or a fluid associated therewith and to control an exhaust valve of the combustion cylinder in dependence on the indicated parameter to cause the exhaust valve to close during the return stroke of the combustion piston, before the combustion piston has reached its top dead centre position (TDC), when the indicated parameter is less than a target value for the parameter; and close on completion of the return stroke of the combustion piston, as the combustion piston reaches its top dead centre position (TDC), when the indicated parameter is equal to or greater than the target value for the parameter.

In an internal combustion engine, for the operation at part-load, a heat exchanger collects heat from the exhaust gas and re-injects the collected heat into the intake gas being at an intermediate stage (p.sub.3c) of the compression. The exhaust gases are cooled down from point Q.sub.81c to point Q.sub.61c. The intake gases are heated up from point Q.sub.33c to point Q.sub.43c. The average combustion temperature is higher while the exhaust gas temperature is lowered, wherefore the yield is definitely increased.

In an internal combustion engine, for the operation at part-load, a heat exchanger collects heat from the exhaust gas and re-injects the collected heat into the intake gas being at an intermediate stage (p.sub.3c) of the compression. The exhaust gases are cooled down from point Q.sub.81c to point Q.sub.61c. The intake gases are heated up from point Q.sub.33c to point Q.sub.43c. The average combustion temperature is higher while the exhaust gas temperature is lowered, wherefore the yield is definitely increased.

A temperature control throttle device is provided. The temperature control throttle device includes: at least one throttle; a first pipeline and a second pipeline, wherein, the first pipeline and the second pipeline are connected to the same side of the at least one throttle in an air flow direction in parallel, and wherein the second pipeline is provided with a heat exchanger that heats air flowing through the second pipeline with engine coolant, engine oil or engine exhaust gas as a heat source.