A method and apparatus according to the invention is described, which in a first mode operates as an internal combustion engine delivering energy and in a second mode operates as a pulsed compression reactor converting electrical energy in the form of chemical compounds. In the second mode, at least one of the generated compounds is collected and temporarily stored.

A method and apparatus according to the invention is described, which in a first mode operates as an internal combustion engine delivering energy and in a second mode operates as a pulsed compression reactor converting electrical energy in the form of chemical compounds. In the second mode, at least one of the generated compounds is collected and temporarily stored.

Improvements to an engine comprise an air compressor cylinder with a piston, a combustion chamber cylinder with a piston. An engine has added an expansion chamber cylinder with a piston. Pistons each have a connecting rod and connecting rod head and associated parts adapted for reciprocating motion via combustion products, and a transmission associated with the engine. Improvements are to the piston seals, ignition assembly, valve shape and stem/rocker, valve operating mechanism, construction of head, heat management/heat shield, connecting rod/piston rotator, engine balancing, fuel pump placement, and a machining process.

Improvements to an engine comprise an air compressor cylinder with a piston, a combustion chamber cylinder with a piston. An engine has added an expansion chamber cylinder with a piston. Pistons each have a connecting rod and connecting rod head and associated parts adapted for reciprocating motion via combustion products, and a transmission associated with the engine. Improvements are to the piston seals, ignition assembly, valve shape and stem/rocker, valve operating mechanism, construction of head, heat management/heat shield, connecting rod/piston rotator, engine balancing, fuel pump placement, and a machining process.

A piston oil squirter is selectively opened when an oil temperature is below a threshold oil temperature to transfer heat from the combustion chamber and heat the oil more rapidly when the engine is cold.

A piston oil squirter is selectively opened when an oil temperature is below a threshold oil temperature to transfer heat from the combustion chamber and heat the oil more rapidly when the engine is cold.

A method and system to arrange combustion air for a combustion engine or cooling air for an electric motor that are situated in warm indoor space. A started combustion engine or a combustion engine to be started or the air intake equipment of an electric motor has in immediate closeness at least one air intake box where there is connected or will be connected an air channel that reaches the outdoor space and then the outdoor air flows through the air channel to the air intake box and further to the engine air intake equipment. The aspects of the disclosed embodiments are used in the air intake of the lorries, trailer trucks and busses and also power tools and the cooling air of the electric motors.

A method and system to arrange combustion air for a combustion engine or cooling air for an electric motor that are situated in warm indoor space. A started combustion engine or a combustion engine to be started or the air intake equipment of an electric motor has in immediate closeness at least one air intake box where there is connected or will be connected an air channel that reaches the outdoor space and then the outdoor air flows through the air channel to the air intake box and further to the engine air intake equipment. The aspects of the disclosed embodiments are used in the air intake of the lorries, trailer trucks and busses and also power tools and the cooling air of the electric motors.

Methods and systems are provided for improving engine knock control by accounting for a drop in charge cooling efficiency of a knock control fluid at higher temperatures. In response to the prediction of an elevated temperature of a knock control fluid at a time of release from a direct injector, a pulse width of the injection is adjusted. Any knock relief deficits are compensated for using alternate engine adjustments, such as boost or spark timing adjustments.

An engine system capable of controlling an intake air flow includes a combustion chamber, an ignition plug, an intake air flow control valve, and a controller. The controller performs, in at least a part of an operating range, SPCCI combustion in which after jump-spark ignition combustion of a portion of a mixture gas inside the combustion chamber by a jump-spark ignition of the ignition plug, compression ignition combustion of the remaining mixture gas is carried out by a self-ignition. The controller strengthens, at least in a part of the operating range of SPCCI combustion, the intake air flow inside the combustion chamber by controlling the intake air flow control valve. The controller controls, in a middle-load range of the operating range where SPCCI combustion is performed, the intake air flow control valve so that the intake air flow becomes weaker than in a high-load range and a low-load range.