A system and method for combustion in an engine includes a combustion chamber, a prechamber, and a fluid injector. The prechamber extends from a first end to a second is fluidly connected to the combustion chamber through at least one port positioned at the first end of the prechamber. The fluid injector is configured to introduce a fluid into the prechamber following combustion of an air-fuel mixture within the prechamber and positioned to introduce the fluid into the prechamber at the second end of the prechamber.

A water injection device of an internal combustion engine, including a water tank for storing water, at least one water injector, a conveying element for conveying water from the water tank into the water injector, and a shut-off element, which is situated in an area between the conveying element and the water injector, and which is configured to maintain a system pressure between the shut-off element and the water injector at a level such that water situated in the area is prevented from evaporating. An internal combustion engine, which includes a water injection device.

Internal combustion engine having: a cylinder defining a combustion chamber; an exhaust duct that is flown through by the exhaust gases; and a system to supply a water-based operator liquid to the combustion chamber having: a tank designed to contain a certain amount of water-based operator liquid and a heating device designed to heat the water-based operator liquid contained in the tank. The heating device has: a first gas-liquid heat exchanger, which is designed to be flown through by at least part of the exhaust gases flowing along the exhaust duct; a second liquid-liquid heat exchanger, which is designed to heat the water-based operator liquid contained in the tank; and a hydraulic circuit, which is designed to send round an exchange fluid through the first heat exchanger to transfer the heat from the exhaust gases to the exchange fluid and through the second heat exchanger to transfer the heat from the exchange fluid to the water-based operator liquid contained in the tank.

A fuel and water injection system includes: an injector having a needle which is movable upwardly and downwardly by a solenoid coil, a nozzle orifice which is opened and closed by upward and downward movements of the needle, and a pressure chamber communicating with the nozzle orifice; a fuel pump supplying fuel to the pressure chamber; a water pump supplying water to the pressure chamber; a solenoid shut-off valve disposed on a water supply pipe connecting the water pump and the injector; an engine control unit (ECU) controlling the fuel pump and the injector; and a water supply controller controlling the water pump and the solenoid shut-off valve.

A fuel and water injection system includes: an injector having a needle which is movable upwardly and downwardly by a solenoid coil, a nozzle orifice which is opened and closed by upward and downward movements of the needle, and a pressure chamber communicating with the nozzle orifice; a fuel pump supplying fuel to the pressure chamber; a water pump supplying water to the pressure chamber; a solenoid shut-off valve disposed on a water supply pipe connecting the water pump and the injector; an engine control unit (ECU) controlling the fuel pump and the injector; and a water supply controller controlling the water pump and the solenoid shut-off valve.

A motor vehicle includes a liquid container for receiving an operating liquid, a cooling circuit for cooling a drive motor of the motor vehicle via a cooling liquid circulating in the cooling circuit, at least one heating coil arranged in the liquid container, the heating coil being operatively attached to the cooling circuit so that the cooling liquid is to flow through the heating coil and thereby heat the operating liquid, and a connection line operatively attached to the cooling circuit to thereby form a secondary circuit through which the cooling liquid is to flow, wherein the heating coil is arranged in the secondary circuit.

A vehicle system storing an aqueous solution that includes a first compartment; a second compartment; a module that includes a feed pump unit connected for pumping aqueous solution from the first compartment to a feed outlet; a jet pump having a suction inlet, a pressure inlet and an outlet; said feed pump unit being further connected for pumping aqueous solution along a flow path from the first compartment through the feed pump unit, through the pressure inlet of the jet pump to the outlet of the jet pump; and a heater that heats the at least said flow path; said suction inlet being connected to a suction line that receives the aqueous solution from the second compartment; said outlet of said jet pump returning aqueous solution from the suction inlet and from the pressure inlet to the first compartment.

Disclosed are a method of controlling a water injector for preventing damage to a catalyst for exhaust gas purification and an engine driven by the method. A method of controlling the operation of an injector for injecting water into the combustion chamber of an engine to which a turbo system for increasing the amount of air by compressing air has been applied includes a catalyst state determination step of determining the danger condition of a catalyst for exhaust gas purification by detecting the state of the catalyst, a water injection amount calculation step of calculating a water injection flow value F1 at which a temperature of exhaust gas drops to a preset temperature when the catalyst is in the danger condition, and a water injection step of performing the waterjet operation of a water injector based on the water injection flow value calculated in the water injection amount calculation step.

Provided is a fuel composition prepared by adding gas-to-liquid oil and water to light cycle oil to conduct emulsification. The fuel composition is used as a fuel for a diesel engine (12) in a ship (10). The ship (10) includes a fresh water tank (15), an LCO tank (13), and a GTL tank (14) configured to store water, light cycle oil, and gas-to-liquid oil, respectively, and a mixer (16) configured to mix the water, the light cycle oil, and the gas-to-liquid oil fed from the respective tanks to produce the fuel composition.

A diagnostic apparatus includes a fuel tank; a canister adsorbing evaporative fuel; an upstream purge line allowing the canister and an engine intake system to communicate upstream of a pressure charger; an upstream purge valve that opens and closes the upstream purge line; a pressure detector detecting pressure in the upstream purge line; a valve controller that opens and closes the upstream purge valve during pressure-charging and non-pressure-charging; a timekeeper measuring an accumulative time in which a diagnosis execution condition is satisfied after a purge-flow diagnosis starts; and a determiner determining whether evaporative fuel processing system operates normally or abnormally depending on whether the pressure decreases by a predetermined pressure or more from the start of the diagnosis. Every time the upstream purge valve opens after the condition is satisfied, the timekeeper measures the accumulative time after a predetermined delay time elapses from when a valve opening command is output.