The ignition insert with an active pre-chamber (1) comprises an insert well (72) arranged in a cylinder head (3) of an internal combustion engine (2), said well (72) accommodating a cylindrical insert body (70) which is indexed in rotation and in which are arranged an ignition pre-chamber (71), an insert spark plug well (83) receiving a spark plug (12), and a injector radial orifice (88) which is aligned with a injector lateral well (73) arranged in the cylinder head (3) so as to receive an injector nose (16), said body (70) being terminated by a pre-chamber nose (75) opening into a combustion chamber (5), and being held in the insert well (72) by fixing means (82) cooperating with clamping means (74).

The ignition insert with an active pre-chamber (1) comprises an insert well (72) arranged in a cylinder head (3) of an internal combustion engine (2), said well (72) accommodating a cylindrical insert body (70) which is indexed in rotation and in which are arranged an ignition pre-chamber (71), an insert spark plug well (83) receiving a spark plug (12), and a injector radial orifice (88) which is aligned with a injector lateral well (73) arranged in the cylinder head (3) so as to receive an injector nose (16), said body (70) being terminated by a pre-chamber nose (75) opening into a combustion chamber (5), and being held in the insert well (72) by fixing means (82) cooperating with clamping means (74).

Various embodiments of the present disclosure provide a combustion-powered fastener-driving tool including multiple combustion chambers and/or usable with fuel canisters of varying lengths.

Various embodiments of the present disclosure provide a combustion-powered fastener-driving tool including multiple combustion chambers and/or usable with fuel canisters of varying lengths.

A high-pressure gas compression-ignition engine includes a cylinder block, a piston and a cylinder head, the piston is mounted on the cylinder block and sealed by the cylinder head to form a combustion chamber for fuel work, and the cylinder head is respectively provided with an intake valve and an exhaust valve. It also comprises a fuel supply system, the fuel in the tank is pressurized by the pump body through a fuel channel and then supplied to the combustion chamber of the cylinder block; a fuel injection device for injecting fuel into the intake valve; a compression-ignition system, which is connected to the exhaust duct or the external air source, and recovers or sucks part of the tail gas energy discharged from the power stroke of the combustion chamber into the external air source, and stores it in the compression-ignition gas storage tank after compression.

The invention relates to an engine having prechamber ignition, in particular a gas engine, that comprises a main combustion space in a cylinder of the engine for combusting an air-fuel mixture and a prechamber having an ignition device arranged therein and a fuel injector arranged therein, wherein the prechamber has at least one transfer port that fluidically connects the prechamber to the main combustion space. The engine is characterized in that the fuel injector arranged in the prechamber is the only fuel injector via which fuel can be introduced into the associated main combustion space.

The invention relates to an engine having prechamber ignition, in particular a gas engine, that comprises a main combustion space in a cylinder of the engine for combusting an air-fuel mixture and a prechamber having an ignition device arranged therein and a fuel injector arranged therein, wherein the prechamber has at least one transfer port that fluidically connects the prechamber to the main combustion space. The engine is characterized in that the fuel injector arranged in the prechamber is the only fuel injector via which fuel can be introduced into the associated main combustion space.

A combustion pre-chamber device for a spark ignition internal combustion engine is configured to engage a spark plug and be mounted to a cylinder head in communication with a combustion chamber of a cylinder of the engine. The combustion pre-chamber device includes any one or combination of a number of features to improve operating effectiveness, including extending the combustion operating range by improving cooling and optimizing the flow field inside the combustion pre-chamber device.

A combustion pre-chamber device for a spark ignition internal combustion engine is configured to engage a spark plug and be mounted to a cylinder head in communication with a combustion chamber of a cylinder of the engine. The combustion pre-chamber device includes any one or combination of a number of features to improve operating effectiveness, including extending the combustion operating range by improving cooling and optimizing the flow field inside the combustion pre-chamber device.

The invention relates to an engine having prechamber ignition, in particular a gas engine, that comprises a main combustion space in a cylinder of the engine for combusting an air-fuel mixture and a prechamber having an ignition device arranged therein and a fuel injector arranged therein, wherein the prechamber has at least one transfer port that fluidically connects the prechamber to the main combustion space. The engine is characterized in that the fuel injector arranged in the prechamber is the only fuel injector via which fuel can be introduced into the associated main combustion space.