A mass is movable into and out of contact with a valve seat to control flow through an opening of the valve seat. The movable mass is operably coupled to an electronic actuator. A drive current is supplied to the electronic actuator in a manner that induces a mechanical resonance in the movable…
A system and method for venting gaseous fuel from an engine of an engine system are described. The engine system includes multiple vent valves that allow a controller of the engine system to vent different volumes of a fuel feed line that deliver the fuel to the engine. An engine purge controller…
The disclosure relates to a computer-implemented method for controlling direct injection of hydrogen fuel into an engine cylinder (103) of a vehicle (1) from a hydrogen tank (104) via an injector system (100), the method comprising: determining (S102) a present hydrogen pressure in the hydrogen…
An apparatus and method for pressurizing and supplying a gaseous fuel to an engine includes a first supply and a second supply of the gaseous fuel stored as a compressed gas. A pressure regulator regulates a pressure of the gaseous fuel fluidly received from the first supply or the second supply, a…
Described herein is a two-stage electronic pressure regulator (5). The regulator (5) comprises an inlet duct (31), an intermediate duct (32), an outlet duct (33), a first, mechanical, valve (10) arranged between the inlet duct and the intermediate duct, and a second, electronic, valve (20) arranged…
Die Erfindung betrifft ein Verfahren zum Betrieb einer Verbrennungskraftmaschine mit mindestens zwei Zylindern und einem System zur Kraftstoff-Einspritzung, bei dem der Kraftstoff aus einem Primärtank entnommen und unter einer gegenüber dem atmosphärischen Druck deutlich verdichteten Form einem…
A controller is configured to control an internal combustion engine. The controller is configured to perform a fuel pressure control of adjusting a fuel pressure downstream of an electromagnetic valve in a flow direction of fuel in a fuel passage to a prescribed pressure lower than a fuel pressure…
Described herein is a two-stage electronic pressure regulator (). The regulator () comprises an inlet duct (), an intermediate duct (), an outlet duct (), a first, mechanical, valve () arranged between the inlet duct and the intermediate duct, and a second, electronic, valve () arranged between the…
A hydrogen pressure maintenance system of a hydrogen fuel engine includes a hydrogen tank configured to store hydrogen, an injector configured to inject the hydrogen, a hydrogen internal combustion engine configured to operate using the hydrogen from the injector, a hydrogen pressure controller…
An ECU 1A is provided in an internal combustion engine 50 which uses multiple gaseous fuels as fuel and which is provided with a regulator 60A capable of adjusting pressure of the fuel to be injected in a fuel supply path FR. The ECU 1A performs combustion control of the internal combustion engine…
Provided is a fuel supply method for a marine structure using a high-pressure natural gas injection engine, for example, an ME-GI engine, in which boil-off gas generated in an LNG storage tank is compressed to a medium pressure, reliquefied, compressed to a high pressure, gasified, and then…
A gas mixer (7) has a mixing chamber (15) in which an air mass flow (9) of combustible gas is measured. A controller (8) controls the measurement of combustible gas based on the air mass flow, gas temperature, engine speed, and engine load of the gas engine. A high dynamic pressure regulator (RP)…
A fuel feed system which causes liquid fuel to evaporate so as to feed gaseous fuel, provided with an evaporator which includes a heater which heats the liquid fuel to vaporize it and an electric heater which adjusts the temperature of the heater. The heater has a heat conduction surface which…
Provided is a shut-off valve fault diagnosis device (6) that performs fault diagnosis of a shut-off valve (41) including a first valve body (103) that is opened in advance during power supply and a second valve body (104) that is opened due to a decrease in a differential pressure between upstream…
Provided is a shut-off valve fault diagnosis device that performs fault diagnosis of a first shut-off valve (41) that is disposed immediately after a gaseous fuel tank and a second shut-off valve (42) that is disposed immediately before a regulator (43) in a gaseous fuel supply system (3). The…
The pump has a cylinder (9) with a piston (11) arranged in the cylinder, where the piston carries out stroke movements running back and forth in the cylinder. A heating unit is provided for heating the fluid flowing from a low temperature chamber (13) into a high temperature chamber (15) through a…
A method for controlling fuel injection in a multifuel internal-combustion engine (1) that can inject alternatively a liquid fuel and a gaseous fuel; the control method envisages the steps of: injecting the gaseous fuel by means of at least one corresponding injector (15); cyclically measuring the…
Provided is a gas engine controller wherein correction of opening of a fuel gas supply regulation valve for reducing NOx can be carried out in a short time with high precision. A gas engine controller (1) comprising an opening regulation means for regulating a fuel gas supply regulation valve (35)…
In a gas-supply system for internal-combustion engines, a pressure-reducing valve (7) is set between the reservoir (3) of the gas and a distribution manifold or rail (2) that feeds the gas to a series of electromagnetically controlled injectors (1) associated to the various cylinders of the engine…
In a gas-supply system for internal-combustion engines, a pressure-reducing valve (7) is set between the reservoir (3) of the gas and a distribution manifold or rail (2) that feeds the gas to a series of electromagnetically controlled injectors (1) associated to the various cylinders of the engine…
In a gas-supply system for internal-combustion engines, a pressure-reducing valve (7) is set between the reservoir (3) of the gas and a distribution manifold or rail (2) that feeds the gas to a series of electromagnetically controlled injectors (1) associated to the various cylinders of the engine…
It is an object of this invention to provide a gas fuel supply system in which a controllable range in the fuel injection quantity control by an injector is enlarged. According to one preferable aspect of this invention, the gas fuel supply system comprises an injector (11) provided in an intake…
A system for disconnection of a fuel supply line (5) to a consumer, particularly a gas driven combustion engine (M) in a vehicle, comprises a fuel pressure tank (T) connected to the engine (M) by a pipe rupture valve (1) influenced by the pressure in a pilot line (4). A dumping cylinder (9) is…
The feed device uses negative pressure which is generated in the intake port during intake stroke, for feeding the fuel gas into intake port.
An operating process for a liquefied petroleum gas (LPG) engine having an electrically-driven closing valve (4) and an electrically operated heater for the gas comprises producing a signal to switch on the heater on starting the engine, determining the heating requirement and, from this, obtaining…
A vaporizer (1) with a first heating device (13) for a fuel gas transfers lost heat from an internal combustion engine (ICE) (12) in part onto the fuel gas in the vaporizer, whose second heating device (14) heats up the fuel gas in the vaporizer without relying on the condition of the ICE.
A transformer (57) using exhaust gas heat as a heat source is provided at a fuel supply system (5) of a gas engine (1), wherein the transformer (57) causes a transformational reaction (H2 + CO2-> CO + H2O) between hydrogen and carbon dioxide, thus changing the composition of the fuel, and this fuel…
Gas metering system for an internal combustion engine. A gas pressure regulator is connected to a venturi located in the inlet of the internal combustion engine through a main adjusting screw being electrically adjustable. The control is provided in which engine rpm, load and mixture temperature…
A GPL fuel system for an internal combustion engine, including a GPL fuel tank (1) and a pump (11) immersed in the fuel tank (1) and driven by an electric motor (11a), the pump (11) being kept constantly running when the temperature is below 0 DEG C or above 80 DEG C, whilst the supply voltage of…
A control system for an internal combustion engine having a pressurized gaseous fuel source, a control valve for regulating the amount of gaseous fuel supplied from the pressurized gaseous fuel source, and an intake passage in which the gaseous fuel, the amount of which has been regulated by the…