A hydrogen internal combustion engine system includes a combustion chamber connected to a hydrogen intake system, an air intake system and a water intake system for controlling hydrogen combustion, characterized in that the water injection system comprises an exhaust gas collector connected to an exhaust water condenser configured to condense at least a part of water contained in the exhaust gases.

A hydrogen internal combustion engine system includes a combustion chamber connected to a hydrogen intake system, an air intake system and a water intake system for controlling hydrogen combustion, characterized in that the water injection system comprises an exhaust gas collector connected to an exhaust water condenser configured to condense at least a part of water contained in the exhaust gases.

An ignition assembly configuration in piston engine with a main piston and an auxiliary piston, the ignition assembly is mounted on the cylinder wall and connects to the combustion chamber; the ignition assembly comprises an connection cut-out passage, an ignition device, or ignition device combined with a fuel injection nozzle, or an ignition device combined with a fuel injection nozzle and a pressure sensor passage. Wherein the auxiliary piston has a by-pass passage to keep the ignition assembly connected to the combustion chamber when the auxiliary piston moves down below the uppermost position of the main piston and blocks the ignition assembly cut-out passage; wherein the uppermost position of the ignition assembly is at or aligned with the uppermost position of the auxiliary piston in combustion stroke, the lowermost position of the ignition assembly is at or aligned with the uppermost position of the main piston. Fuel-water injection, multiple fuel injections and combustions can be easily practiced in the new configuration.

An ignition assembly configuration in piston engine with a main piston and an auxiliary piston, the ignition assembly is mounted on the cylinder wall and connects to the combustion chamber; the ignition assembly comprises an connection cut-out passage, an ignition device, or ignition device combined with a fuel injection nozzle, or an ignition device combined with a fuel injection nozzle and a pressure sensor passage. Wherein the auxiliary piston has a by-pass passage to keep the ignition assembly connected to the combustion chamber when the auxiliary piston moves down below the uppermost position of the main piston and blocks the ignition assembly cut-out passage; wherein the uppermost position of the ignition assembly is at or aligned with the uppermost position of the auxiliary piston in combustion stroke, the lowermost position of the ignition assembly is at or aligned with the uppermost position of the main piston. Fuel-water injection, multiple fuel injections and combustions can be easily practiced in the new configuration.

This invention relates to improvements in internal combustion engines. More particularly it relates to increased levels of usable electrical energy production and fuel efficiency within a relatively fixed speed, cam-track style Engine/Generator when combined with the secondary injection or injections of a rapidly expanding medium (usually water) into the engines combustion chambers during and after the combustion process has been initiated. The injection of said medium causing reduced fuel consumption, increased cylinder pressure, an extended usable piston stroke length, and increased usable energy production, while reducing the temperature of the combustion gases in order to control or eliminate the production of the pollutant, NOx and to further reduce thermal pollution exhausted into the atmosphere.

This invention relates to improvements in internal combustion engines. More particularly it relates to increased levels of usable electrical energy production and fuel efficiency within a relatively fixed speed, cam-track style Engine/Generator when combined with the secondary injection or injections of a rapidly expanding medium (usually water) into the engines combustion chambers during and after the combustion process has been initiated. The injection of said medium causing reduced fuel consumption, increased cylinder pressure, an extended usable piston stroke length, and increased usable energy production, while reducing the temperature of the combustion gases in order to control or eliminate the production of the pollutant, NOx and to further reduce thermal pollution exhausted into the atmosphere.

An internal combustion-type engine or powertrain that is capable of burning wet-alcohol fuel mixture and including a piston reciprocating within a cylinder attached to a cylinder head and connecting to a crank shaft via a connecting rod. An intake cam and valve is mounted within an intake port formed in the cylinder head and an exhaust cam and valve is mounted within an exhaust port also formed in the cylinder head. A pressurized fuel source is introduced into the cylinder by a fuel injector and the percentage of water in the alcohol/water mix operates to prolong the cylinder pressure in order to increase a mean effective pressure (IMEP), leading to a higher torque (improved Brake Mean Effective Pressure—BMEP) of the engine via a longer pressure pulse attained during the period of preferred mechanical advantage of the crank-arm of the engine.

An internal combustion-type engine or powertrain that is capable of burning wet-alcohol fuel mixture and including a piston reciprocating within a cylinder attached to a cylinder head and connecting to a crank shaft via a connecting rod. An intake cam and valve is mounted within an intake port formed in the cylinder head and an exhaust cam and valve is mounted within an exhaust port also formed in the cylinder head. A pressurized fuel source is introduced into the cylinder by a fuel injector and the percentage of water in the alcohol/water mix operates to prolong the cylinder pressure in order to increase a mean effective pressure (IMEP), leading to a higher torque (improved Brake Mean Effective Pressure—BMEP) of the engine via a longer pressure pulse attained during the period of preferred mechanical advantage of the crank-arm of the engine.

A split cycle internal combustion engine apparatus includes a combustion cylinder accommodating a combustion piston and a compression cylinder accommodating a compression piston. The apparatus is arranged to provide compressed fluid to the combustion cylinder. The compression cylinder is coupled to a first liquid coolant reservoir and a second liquid coolant reservoir. A controller is arranged to receive an indication of at least one parameter associated with the engine, and control delivery of at least one of the first liquid coolant from the first liquid coolant reservoir and the second liquid coolant from the second liquid coolant reservoir to the compression cylinder based on the indication of the at least one parameter such that the at least one liquid coolant vaporises into a gaseous phase during a compression stroke.

A compression ignition engine system allows use of hydrous fuels, in particular hydrous biofuels, with high water content (e.g., 20-85% water). The hydrous fuel is pressurized, and also preferably heated via the engine's exhaust gas, to increase its enthalpy, and is then directly injected into the engine cylinder(s) near top dead center. The system provides brake thermal efficiency increases of 20% or more versus a comparable system using conventional diesel fuel, while allowing the use of inexpensive undistilled or lightly distilled biofuels.