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.

An engine system employs a pre-assembled and/or removable cartridge. In another aspect, an ignitor, a fuel injector and an air inlet valve are all accessible from a top of a cartridge even after assembly of the cartridge to an engine cylinder head. A further aspect positions centerlines of an ignitor, a fuel injector and an air inlet valve angularly offset from each other and also angularly offset from a vertical centerline of a cartridge to which they are mounted.

An intake air circuit is structured to transmit intake air from a turbocharger compressor to an intake manifold of an engine. A charge air cooler (“CAC”), a bypass line, and a bypass heater are each positioned along the intake air circuit in parallel with each other. A first control valve is structured to controllably divert the intake air around the CAC. A second control valve is structured to controllably divert the intake air around at least one of the bypass line and the bypass heater. A controller operatively coupled to each of the engine, and the first and second control valves is structured to control each of the first and second control valves to cause the intake air to flow along a determined desired flow path based on each of measured ambient temperature and measured engine load.

The present disclosure relates to a gas engine power generation system, having an engine configured to generate mechanical energy by burning an air-fuel mixture supplied from a mixer, which mixes air filtered by passing through an air cleaner, and fuel of a predetermined pressure which has passed through a zero governor, in which the gas engine power generation system converts the mechanical energy of the engine into electrical energy. The gas engine power generation system according to an embodiment of the present disclosure includes: an intake path having a first intake passage and a second intake passage in which air to be supplied to the mixer flows; an intake passage controller configured to open either one of the first intake passage or the second intake passage and to close the other one; a coolant pump configured to supply coolant to the engine; a radiator configured to dissipate heat of the coolant having passed through the engine; an intake air heater provided in the intake path at a portion where the second intake passage is formed, and configured to dissipate heat of the coolant having passed through the engine; a coolant passage controller configured to distribute the coolant, having passed through the engine, to the coolant pump, the radiator, and the intake air heater; and a controller configured to control operations of the intake passage controller, the coolant passage controller, and the coolant pump based on temperature of the coolant, having passed through the engine, and load information of the engine.

The present disclosure relates to a gas engine power generation system, having an engine configured to generate mechanical energy by burning an air-fuel mixture supplied from a mixer, which mixes air filtered by passing through an air cleaner, and fuel of a predetermined pressure which has passed through a zero governor, in which the gas engine power generation system converts the mechanical energy of the engine into electrical energy. The gas engine power generation system according to an embodiment of the present disclosure includes: an intake path having a first intake passage and a second intake passage in which air to be supplied to the mixer flows; an intake passage controller configured to open either one of the first intake passage or the second intake passage and to close the other one; a coolant pump configured to supply coolant to the engine; a radiator configured to dissipate heat of the coolant having passed through the engine; an intake air heater provided in the intake path at a portion where the second intake passage is formed, and configured to dissipate heat of the coolant having passed through the engine; a coolant passage controller configured to distribute the coolant, having passed through the engine, to the coolant pump, the radiator, and the intake air heater; and a controller configured to control operations of the intake passage controller, the coolant passage controller, and the coolant pump based on temperature of the coolant, having passed through the engine, and load information of the engine.

Provided are turbine engines and methods of operating thereof by heating and evaporating liquid fuels in a controlled manner prior to burning. Specifically, a fuel is heated and evaporated while avoiding coking. Coking is caused by pyrolysis when the fuel contacts a metal surface within a certain temperature range, which is referred herein to a coking temperature range. In the described methods, the fuel is transferred from one component, maintained below the coking temperature range, to another component, maintained above this range. The fuel is airborne and does not contact any metal surfaces during this transfer, and coking does not occur. In some examples, the fuel is also mixed with hot air during this transfer. The heated fuel, e.g., as an air-fuel mixture, is then supplied into a combustor, where more air is added to reach flammability conditions.

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.

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.

An air intake apparatus for an internal combustion engine, the air intake apparatus includes: an air intake apparatus main body portion introducing air into a cylinder; a port portion provided integrally with a downstream side end portion of the air intake apparatus main body portion and inserted into an air intake port in a cylinder head; an air intake passage formed inside the air intake apparatus main body portion and the port portion, and through which an air-fuel mixture containing air and fuel flows; an injector provided in the air intake apparatus main body portion and introducing the fuel into the air intake passage; and a heater heating the fuel introduced by the injector. The injector is disposed at a position where the fuel is capable of being injected into the heater.

An intake air circuit is structured to transmit intake air from a turbocharger compressor to an intake manifold of an engine. A charge air cooler (CAC), a bypass line, and a bypass heater are each positioned along the intake air circuit in parallel with each other. A first control valve is structured to controllably divert the intake air around the CAC. A second control valve is structured to controllably divert the intake air around at least one of the bypass line and the bypass heater. A controller operatively coupled to each of the engine, and the first and second control valves is structured to control each of the first and second control valves to cause the intake air to flow along a determined desired flow path based on each of measured ambient temperature and measured engine load.