A manifold configured to inhibit air recirculation in an engine fueling system, the manifold comprising: a housing including an internal chamber in communication with a high pressure pump (“HPP”) port configured to receive drain fuel from a HPP; a drain port configured to return fuel to a fuel tank; an air bleed port configured to receive air bled from the fueling system; and a check valve positioned within the internal chamber, the check valve configured to inhibit air from flowing from the air bleed port to the HPP port, thereby inhibiting air recirculation into the engine fueling system.

A method for operating an engine in which fuel is supplied to the engine by a fuel pump and by a high-pressure fuel pump, and in which the speed of the fuel pump and/or the electrical current for feeding the fuel pump is controlled in accordance with a requirement variable, taking into account a determination specification. When the engine has changed to an overrun mode of operation, a calibration is performed and the speed of the fuel pump is detected and is maintained. Once the triggering pressure for a calibration valve has been reached, the pump current is detected, a bypass volumetric flow rate of the high-pressure fuel pump is determined during calibration using operating parameters and the triggering pressure for the calibration valve, the determined speed, the bypass volumetric flow rate and the determined pump current are used to calibrate the determination specification.

A valve case mounting structure includes a mount base and a valve case. The mount base includes a valve case support portion and a retainer piece having a first engagement opening and a second engagement opening. The valve case includes an engaging projection portion, and a holder portion. When the engaging projection portion is positioned at a front end side of the first engagement opening, the retainer piece does not reach the holder portion. When the engaging projection portion is moved from the front end side of the first engagement opening toward the second engagement opening, a front end portion of the retainer piece is inserted into the holding space before becoming unable to be inserted into the holder portion.

A fuel separation system includes a fuel separator configured to receive a fuel stream and separate the fuel stream, based on a volatility of the fuel stream, into a vapor stream defined by a first auto-ignition characteristic value and a first liquid stream defined by a second auto-ignition characteristic value, the second auto-ignition characteristic value greater than the first auto-ignition characteristic value; and a heat exchanger fluidly coupled between a fuel input of the fuel stream and the fuel separator, the heat exchanger configured to transfer heat from the vapor stream to the fuel stream, and output a heated fuel stream to the fuel separator and a second liquid stream defined by the first auto-ignition characteristic value.

An external fuel pump and a valve seat for the fuel pump are provided. The valve seat includes a valve body. One side of the valve seat body is provided with an installation chamber for installing a valve body, and the other side of the valve seat body is an oil separator. The oil separator is connected to an outer wall of the installation chamber. The external fuel pump includes the valve seat and a fuel chamber constituted by a housing and a cover. The valve seat body is located in the fuel chamber, the oil separator of the valve seat body is located at a lower portion of an exhaust port provided on the cover. An anti-flip mechanism is provided between the exhaust port and the oil separator. The valve seat is multi-functional and convenient to install with less space and fewer components, which reduces costs.

A fuel consumption-measuring system includes a feed line, a first pump which pumps fuel from a tank via the feed line to a consumer, a fuel consumption-measuring device in the feed line, a first return line which branches off at the consumer and opens into the feed line between the fuel consumption-measuring device and the consumer, a second return line which branches off from the feed line between the first pump and the fuel consumption-measuring device which opens into the tank, a branch which leads from the feed line into the second return line, a heat exchanger, and a flow device arranged in the first and second return lines. The flow device provides an equal volume flow at an opening of the first return line into the feed line and at the branch leading from the feed line into the second return line.

A vehicle kill switch comprising: a foot actuatable floor mounted switch; a vehicle stopping means in signal communication with the foot actuatable floor mounted switch. A vehicle kill switch comprising: a first foot actuatable floor mounted switch; a first solenoid in signal communication with the first foot actuatable floor mounted switch; a ground in signal communication with the first foot actuatable floor mounted switch; a first fuel valve in operable communication with the first solenoid; a second foot actuatable floor mounted switch; a second solenoid in signal communication with the second foot actuatable floor mounted switch and in communication with the first foot actuatable floor mounted switch; a ground in signal communication with the second foot actuatable floor mounted switch; a second fuel valve in operable communication with the second solenoid; where when the first switch is closed, the first solenoid and second solenoid become in signal communication with ground, and the first solenoid and second solenoid closes the first fuel valve and second fuel valve, respectively, which in turns stops the flow of fuel to the vehicle engine; and where when the second switch is closed, the first solenoid and second solenoid become in signal communication with ground, and the first solenoid and second solenoid closes the first fuel valve and second fuel valve, respectively, which in turns stops the flow of fuel to the vehicle engine. A vehicle kill switch retrofit kit comprising: a foot actuatable floor mounted switch, the foot actuatable floor mounted switch comprising a first contact located on a first side of the switch, and a second contact located on a second side of the switch; a first wire connected at a first end to a first contact on the foot actuatable floor mounted switch, with a second end configured to attach to an vehicle component; a second wire connected at a first end to a second contact on the foot actuatable floor mounted switch, with a second end configured to attach to an vehicle component; and a floor mounting bracket configured to attach the foot actuatable floor mounted switch to the floor of a vehicle.

An internal combustion engine may be coupled to a two-step engine boosting system to provide desired boost to the engine to meet torque demand. The two-step engine boosting system may first provide boost to the engine by nitrous oxide injection into the engine, followed by switching to providing boost from a frame rail air boosting system to generate the desired boost. Air from an air pump coupled to a transmission of the engine may flow air to the frame rail air boosting system for storage and for subsequent use in providing boost to the engine.

An altitude fuel limiter and method for controlling an engine using the same is provided. The altitude fuel limiter includes a torque screw sleeve extending from an inboard end to an outboard end. The torque screw sleeve has an interior surface defining a central bore extending axially within the torque screw sleeve. A plunger is disposed within the central bore and moves axially between a first position and a second position. A plunger regulator senses ambient pressure and is coupled with the plunger to axially displace the plunger toward the inboard end of the torque screw sleeve to the first position in response to sensing an ambient pressure that is below a predetermined pressure. The predetermined pressure may be associated with non-compliant altitudes and the plunger limits fuel delivered to the engine when displaced to the first position.

A fuel supply device includes a filter device, a pump, a suction pipe, and a bubble removing device. The filter device includes a first filter that filters a fuel, a filter chamber surrounded by the first filter, and a filter opening that is in fluid communication with the filter chamber. The pump has a pump suction port for drawing the fuel from the filter chamber. The suction pipe fluidly connects the filter opening to the pump suction port. The bubble removing device is disposed in at least one of the filter device and the suction pipe. The bubble removing device includes a valve device that is configured to discharge a bubble contained in the fuel to the internal space of the fuel tank, and a foreign matter regulator that is disposed between the valve device and the internal space and that regulates or prevents a foreign matter contained in the fuel from flowing into the fuel supply device.