14results about "Wear reducing fuel injection" patented technology

The invention relates to a gas injector for blowing in gaseous fuel, comprising: a magnetic actuator (2) having an armature (20), an inner pole (21) and a coil (22); a closing element (3) having a valve needle (30) and an armature bolt (23), the valve needle (30) releasing and closing a gas path (14) on a sealing seat (11) arranged at a first end of the gas injector, the armature (20) being connected to the armature bolt (23) and the armature bolt (23) being operatively connected to the valve needle (30); a closed lubricant chamber (4), which is filled with a lubricant and in which the armature (20) and the armature bolt (23) are arranged, the lubricant providing a lubricating action in the lubricant chamber (4); a restoring element (10) which resets the closing element (3) into a closed starting position, in which the lubricant chamber (4) is filled with a gas and a liquid lubricant for damping during the movement of the closing element (3), and in which the volume ratio of the liquid to the gas is in the range of 70% / 30 to 95% / 5%.

The aim of the invention is to provide a solenoid valve (1) with a valve housing (2), in which an electric coil (3) and a solenoid armature (5) are arranged, and a valve element (8), which can be actuated in an axial actuation direction by the solenoid armature (5), for opening and closing the solenoid valve (1), wherein a valve stroke of the valve element (8) can be limited in a simple manner. According to the invention, this is achieved in that the coil (3) is arranged on a coil support (4), and an end section (4a) of the coil support (4), said section axially facing the solenoid armature (5), is designed as an end stop for the solenoid armature (5) in order to limit the axial movement of the solenoid armature (5). The coil support (4) is made of plastic, and the coil (3) is at least partly integrated into the coil support (4).

The invention relates to a fuel injector (1) for direct injection of gaseous fuel, extending along an injector axis (A) from a proximal side (P) to a distal side (D) and comprising: - an injector body (2) defining a fuel passage (4) and having a distally disposed end portion (2.1) that defines a valve seat (3) extending around an outlet opening (5); and - an outward opening pintle (10) received in the injector body (2) to be axially movable between a proximal pintle position, in which it engages the valve seat (3) to close the outlet opening (5), and a distal pintle position, in which it releases the outlet opening (5). In order to provide reliable means for preventing closing impact damage in an injector for gaseous fuel, the invention provides that the valve seat (3) comprises a first seat portion (3.1), a second seat portion (3.2) and a third seat portion (3.3), wherein the second seat portion (3.2) extends distally between the first seat portion (3.1) and the third seat portion (3.3) and is less inclined with respect to the injector axis (A) than the first seat portion (3.1) and the third seat portion (3.3), and wherein the pintle (10) comprises a first pintle portion (10.4) that is disposed adjacent to the first seat portion (3.1) in the proximal pintle position and a second pintle portion (10.5) radially outside of the first pintle portion (10.4) that is disposed adjacent to the second seat portion (3.2) in the proximal pintle position and that is disposed distally offset from the second seat portion (3.2) in the distal pintle position.

Injector (1) for direct injection of gas into a combustion chamber (16), having: - a stationary body (2, 3), - a nozzle (4) provided with openings for the passage of fuel from the injector to the combustion chamber, - a closing element (5, 6) configured to unlock and close the passage openings of the nozzle (4) and to open towards the outside of the injector (1), - an actuator (20) for actuating the closing element (5, 6) comprising at least one ferromagnetic core (7), a solenoid (8) and an armature (9), - a supply connection (12), and - at least two elements provided with a coating (30) of polymeric material, present on a metal substrate and with anti-wear characteristics.

A fuel injector of a fuel injection system for delivering gaseous fuel to an internal combustion engine, the fuel injector comprising a working fluid chamber (34), a gas delivery chamber (48), and a needle guide bore (24) extending from the working fluid chamber (34) to the gas delivery chamber, wherein the gas delivery chamber (48) communicates with a fuel injector outlet for delivering the gaseous fuel to the internal combustion engine. A valve needle (12) is movable within the needle guide bore (24) along a needle axis to open and close the fuel injector outlet, wherein a gap (26) is defined between an outer surface of the valve needle (12) and an inner surface of the needle guide bore (24); and a needle control valve (30) for controlling the movement of the valve needle (12) by controlling the pressure of a working fluid in the working fluid chamber (34). A seal member (60, 160, 260) is arranged between the valve needle (12) and the needle guide bore (24) to restrict the gap (26) and to permit a controlled volume of working fluid to leak between the valve needle (12) and the needle guide bore (24) into the gas delivery chamber (48), the seal member (60, 160, 260) defining an inner seal surface and an outer seal surface.

In order to reduce the friction of a dry-running solenoid valve (1) with a valve housing (2), in which an electric coil (3) and a magnet armature (5) are arranged, and with a valve element (8) which can be actuated by the magnet armature (5) in an axial actuating direction for opening and closing the solenoid valve (1), in which the coil (3) generates a magnetic flux which, when the solenoid valve (1) is actuated, flows via a magnetically conductive valve housing outer wall (2c) of the valve housing (2) to the magnet armature (5), it is provided according to the invention that a magnetically conductive flux element (12) be provided in the valve housing (2) and introduce at least 80%, preferably at least 90%, and particularly preferably 100%, of the magnetic flux flowing over the valve housing outer wall (2c) into an armature end face (5B), facing the coil (3), of the magnet armature (5).

A fuel pump comprising a valve assembly. The valve assembly comprises a valve member defining a valve axis, and an electromagnetically controlled armature assembly configured to reciprocate linearly along the valve axis within an armature chamber of the fuel pump. The fuel pump further comprises a spring configured to engage a first side of the armature assembly to provide a spring force acting in a first direction along the valve axis. The fuel pump further comprises a lift stop provided on a floor surface of the armature chamber and configured to engage a second side of the armature assembly to limit movement of the armature assembly in the first direction. The armature assembly comprises an armature body fixed to an armature carrier. The armature carrier is fixed to the valve member.

A fuel system component and production method for the same is provided. The fuel system component is fabricated from a blank. The blank is rough machined to form a rough machined fuel system component without forming bores through the rough machined fuel system component. The rough machined fuel system component is then treated to form a hardened case without forming a compound layer on the surface of the rough machined fuel system component. Precision machining of the rough machined fuel system component and forming any bores through the hardened case is then completed to form the finished fuel system component.

A fuel injector 200 for injecting hydrogen fuel into a manifold 232, the fuel injector comprising a body 226 defining a bore along a longitudinal axis of the body. The bore has an upper section and a

The object of this invention is to suppress wear on a rod or rod-contacting components. The electromagnetic suction valve mechanism (electromagnetic valve mechanism) includes a suction valve (valve body), a rod engaging with the suction valve, and a magnetic attraction generating part that generates a magnetic attraction force that causes axial movement of the rod. A low-friction part is provided on the rod. The low-friction part is formed with a coefficient of friction such that the frictional force generated between the rod and the rod-contacting components is less than the rotational driving force of the rod.

A gaseous fuel injector comprising a gas delivery chamber 48 and housing body 22 defining a working fluid chamber 34 and needle guide bore 24. A valve needle 12 is movable within the guide bore, the i

A lubricant supply assembly for a gaseous fuel internal combustion engine, comprising a pressure source module (10) and at least one lubricant doser (31) arranged to release lubricant into a gaseous fuel flow, the lubricant doser including a pumping chamber (35) communicating with a lubricant outlet port (38), and a pumping plunger (34) that is adapted to displace lubricant from the pumping chamber in order to release a defined volume of lubricant during a delivery process, a supply port (36) from which low-pressure lubricant is fed to the pumping chamber and a control port (42) where high-pressure lubricant may be applied to actuate the pumping plunger, wherein the pressure source module comprises: • - a lubricant tank (12) for storing liquid lubricant; • - a first port (12a) fluidly coupled to the supply port of the lubricant dozer; • - a second port (12b) fluidly coupled to the control port of the lubricant dozer; • - a pump (14) in fluid communication with the lubricant tank, the first port and the second port, the pump being operable at a first pressure level P 1 and at a second pressure level P 2; • - a shutoff valve (16) arranged to selectively enable flow from the pump to the first port; and • - a check valve (18) configured to enable flow from the pump to the second port; the check valve having an opening pressure P v, which is greater than the first pressure level P 1 and smaller than the second pressure level P 2.

A lubricant supply assembly for a gaseous fuel internal combustion engine comprising a pressure source module 10 and a lubricant dozer 31. The dozer includes a pumping chamber (35,fig.2) communicating

The invention relates to a gas injector for blowing in gaseous fuel, comprising: a magnetic actuator (2) having an armature (20), an inner pole (21) and a coil (22); a closing element (3) which releases and closes the gas path (14) on the sealing seat (11), the armature (20) being operatively connected to the closing element (3); a closed lubricant chamber (4), which is filled with a lubricant and in which the armature (20) is arranged in order to ensure lubrication of the armature; the closing element (3) has a lubricant chamber (4), and a damping device (6) which is arranged in the lubricant chamber (4), the damping device (6) being designed to damp a closing movement of the closing element (3), the damping device (6) having a damping piston (61), a damping housing (60), a throttle (62) and a damping chamber (63) formed in the damping housing (60), the damping chamber (63) has a throttle (62) which connects the damping chamber (63) to a compensation chamber (54), the throttle being arranged in the damping housing (60), and wherein a guide region (66) with a guide gap is formed between the damping piston (61) and the damping housing (60).