A fuel heating device for a vehicle may include a start sensor detecting a starting of a vehicle; a controller area network (CAN) communication device transmitting and receiving various signals to and from an engine control device; a resistance sensor measuring a resistance of a heater provided inside an injector; and a controller controlling the resistance sensor to measure the resistance of the heater when the starting of the vehicle is detected in a state in which a failure occurs in the CAN communication device, converting the measured resistance of the heater into a temperature of a fuel, and operating the heater to heat the fuel to a reference temperature when the converted temperature is lower than or equal to a threshold.

A fuel injection system for fuel metering may include an injection nozzle, which includes a nozzle body, a nozzle needle, and a nozzle orifice, wherein nozzle needle is disposed in the nozzle body; a control piston configured to mechanically and electrically contact the nozzle needle in an axial direction opposite to the nozzle orifice; a transmitter configured to communicate with a controller and electrically contact the nozzle needle via the control piston; wherein the controller is configured to determine an open state and a closed state between the nozzle needle and the nozzle body via an electrical signal detected by the transmitter; and wherein the controller is configured to adjust the open state and the closed state in correlation with a fuel injection quantity.

A fuel piping structure includes a fuel pipe, a pressure sensor in communication with the fuel pipe through a communication channel, and a sensor holding part including a projecting part projecting to an outer-peripheral side, being connected to the fuel pipe, and holding the pressure sensor disposed therein. A ring-shaped elastic member is provided between an underside of the projecting part and the fuel pipe, the projecting part being pressed against the fuel pipe. The tip side of the sensor holding part on which a ring-shaped seal member is provided is inserted into a recessed part of the fuel pipe and in communication with the inside of the fuel pipe, and the communication channel is in communication with the recessed part. In the sensor holding part, a conduction channel for a seal test is formed from an end face of the projecting part to the seal member.

An immersed axial fuel stage (AFS) injector includes an injector body configured to be positioned in a hot gas path within a combustion liner. The injector body includes an outer wall defining a hollow interior and having film cooling holes extending from the hollow interior to an outside of the outer wall, and an inner wall spaced from an inside of the outer wall along at least part of a length of the outer wall, the inner wall defining an air plenum therein. Impingement cooling holes in fluid communication with the air plenum extend through the inner wall along at least a portion of the inner wall. A fuel passage extends at least partially along the hollow interior of the outer wall, and fuel nozzles in fluid communication with the fuel passage extend through to the outside of the outer wall.

A header for a fuel injector is connectable to a fuel injector main body, wherein the header includes a sensor adapted to measure one or more parameters of the fuel injector during operation thereof.

Methods are provided for controlling a solenoid spill valve of a direct injection fuel pump, wherein the solenoid spill valve is energized and de-energized according to certain conditions. An example control strategy is provided for operating the direct injection fuel pump when fuel vapor is detected at an inlet of the direct injection fuel pump. To ensure pump effectiveness during the presence of fuel vapor, the solenoid spill valve may be maintained energized for a minimum angular duration past a top-dead-center position of a piston in the direct injection fuel pump.

A fuel injector includes an injector housing, a longitudinally movable nozzle needle, and a force sensing element. The injector housing defines a nozzle chamber, a pressure chamber, and a measuring chamber. The nozzle chamber is configured to be supplied with pressurized fuel via a feed line formed in the injector housing. The pressure chamber is configured to be hydraulically connected to the feed line. The nozzle needle is disposed in the nozzle chamber and is configured to open and to close at least one spray hole. The force sensing element is disposed in the measuring chamber and is configured to detect a pressure in the pressure chamber. The measuring chamber is separated from the pressure chamber by a diaphragm-like intermediate wall. The force sensing element supports the intermediate wall.

A sensor for detecting the properties of the fuel of an internal combustion engine includes at least one pair of internal electrodes (12, 13), extending in an axial direction relative to a further or third external electrode (14) which surrounds them. The invention also relates to a fuel rail (2) to which the sensor may be mounted, and a method for detecting the properties of the fluid.

A fuel heating device for a vehicle may include a start sensor detecting a starting of a vehicle; a controller area network (CAN) communication device transmitting and receiving various signals to and from an engine control device; a resistance sensor measuring a resistance of a heater provided inside an injector; and a controller controlling the resistance sensor to measure the resistance of the heater when the starting of the vehicle is detected in a state in which a failure occurs in the CAN communication device, converting the measured resistance of the heater into a temperature of a fuel, and operating the heater to heat the fuel to a reference temperature when the converted temperature is lower than or equal to a threshold.

A method for providing consistent actuator events for each of a plurality of consecutive actuator events of an electromagnetic actuator, includes applying a first bi-directional current waveform for a first actuator event and applying a second bi-directional current waveform for a second actuator event immediately subsequent to the first actuator event. The first bi-directional current waveform includes applying current in a first direction when the actuator is commanded to an actuated position and applying current in a reversed second direction when the actuator is commanded to a rest position. The second bi-directional current waveform includes applying current in the reversed second direction when the actuator is commanded to an actuated position and applying current in the first direction when the actuator is commanded to a rest position.