A fluid intake/discharge valve body for suction of a cryogenic liquefied gas fluid into a cylinder liner and discharge of the gas fluid with a piston, includes: a valve seat body including a fluid supply portion to supply the fluid and a fluid exhaust portion; an intake valve biased against the fluid supply portion; and a discharge valve biased against the fluid exhaust portion. The fluid supply portion includes a supply pathway connected to a supply pipe; a dividing wall including intake holes facing the intake valve; and a counterbore recessed portion on the dividing wall to surround the intake holes. The intake valve abuts an edge of the recessed portion when biased against the fluid supply portion. The discharge valve receives fluid pressure from a side of the discharge hole including a recessed portion disposed in a region wider than an outer periphery of the discharge hole.

A gas powered internal combustion engine in which the gas is provided from the gas phase of a pressurized liquid gas in an liquified petroleum gas container and in which the liquified petroleum gas container is rigidly mounted adjacent to the internal combustion engine at a preselected angle to be in conductive heat transfer relationship to the internal combustion engine and in vibration receiving relationship to the internal combustion engine whereby the liquified gas in the liquified petroleum gas container is heated and vibrated and the effective surface area thereof is thereby increased. A pressure regulator is provided for receiving the gas from the liquified petroleum gas bottle regulating the pressure of the gas transmitted to the internal combustion engine and at least one flexible hose is connected to the pressure regulator for transmitting the gas therethrough. A vibration and/or heat limiting member may be incorporated to reduce the frequence and amplitude of the vibration and limit the amount of heat transferred to the liquified petroleum gas.

An attachment for purging the inside of the carburetors which is comprised by a tubular device having a carburetor connecting member and quick connect receiver extension. The attachment is connected through the bottom of the carburetor or through the feed fuel line of the carburetor. The attachment is attachable to a quick disconnect fitting which can be connected to a conventional car tire air nozzle or pressurized can with the same fitting as the car tire nozzle. The attachment allows all the jets and passages located on the inside of carburetor to be purged at the same time with multiple short blasts of compressed air or pressurized can solvent but without the carburetor being removed from the engine or taken a part. The same principles can easily be applied to all type carburetors for either a two or four-stroke engine.

Provided is an engine system. The engine system includes a mixer mixing air and vaporized fuel to form a mixture, an engine driving a cylinder with the mixture discharged from the mixer, a first storage tank supplying the vaporized fuel to the mixer, a second storage tank storing liquid fuel or supplying the stored liquid fuel to the first storage tank, and a heat exchanger performing heat exchange between the liquid fuel discharged from the first storage tank and gas flowing to the engine, thus vaporizing the liquid fuel.

A vehicle includes a prime mover and a fuel system. The fuel system includes a tank, a regulator, a first shutoff valve, and a second shutoff valve. The tank is configured to provide a supply flow of fuel. The regulator is controllable to provide a regulated flow of fuel to the prime mover by modulating the supply flow of fuel. The first shutoff valve is positioned to facilitate selectively disengaging the prime mover from the fuel system. The second shutoff valve is positioned to facilitate selectively blocking the supply flow of fuel provided by the tank.

The invention relates to systems enabling use of liquefied petroleum gas in diesel common-rail engines, and in particular to fueling diesel engines with diesel gas dual-fuel or only gas instead of diesel fuel. A gas ultrasonic transducer system for operating a diesel common-rail engine, comprises an electronic control unit; a water tank; a gas tank with gas supply shut-off valve; a gas level sensor; a gas pump operably connected with the gas tank; a water pump operably connected with the water tank; a mixer comprising a water level sensor and an ultrasonic transducer adapted to generate water vapor and gas mixture; wherein the mixer comprises two compartments: the upper compartment and the lower compartment, the means for separation of the upper and the lower compartments comprising an anti-reflux valve adapted to allow water vapor from the lower compartment to pass through the anti-reflux valve to the upper compartment and to prevent any liquid water from flowing into the upper compartment wherein the upper compartment of the mixer comprises an outlet operably connected with engine intake manifold; wherein the outlet of the gas pump is operably connected with the upper compartment of the mixer, the outlet of the water pump is operably connected with lower compartment of the mixer, where the ultrasonic transducer is located below the anti-reflux valve. The controlled interaction between elements of the system and vehicle elements results in a gas-water vapor mixture. In case of embodiment with dual fuel, the water gas mixture is calculated on the grounds of information received by the electronic control unit of the system from the engine common-rail, the engine temperature sensor, the air flow meter sensor, the acceleration pedal block.

Provided is an engine system. The engine system includes a mixer mixing air and vaporized fuel to form a mixture, an engine driving a cylinder with the mixture discharged from the mixer, a first storage tank supplying the vaporized fuel to the mixer, a second storage tank storing liquid fuel or supplying the stored liquid fuel to the first storage tank, and a heat exchanger performing heat exchange between the liquid fuel discharged from the first storage tank and gas flowing to the engine, thus vaporizing the liquid fuel.

The invention involves a system and method for providing a liquid fuel or a liquid and gaseous fuel to a diesel or Otto cycle engine for operation of the engine. The system includes a primary electronic control module (ECM), which monitors engine sensors and contains a first three-dimensional fuel map for the liquid fuel. A second ECM is connected for bi-directional transfer of information to the first ECM, the second ECM contains a second three-dimensional fuel map for delivery of the gaseous fuel through a secondary gaseous fuel injection assembly. The bi-directional communication between the two ECMs while monitoring the engine sensors allows both ECMs to “learn” an efficient fuel map for delivery of both fuels in the same cycle for improved efficiency, reduction in slip and lower emissions.

A vehicle includes an engine and a fuel system. The fuel system includes a fuel tank that stores liquefied petroleum (LP) fuel. The fuel tank includes a tank outlet port and a tank return port. The fuel distribution system supplies fuel from the fuel tank to the engine and returns unused fuel to the fuel tank. The fuel distribution system includes an engine supply line coupled to the tank outlet port, and a fuel rail disposed on the engine and coupled to the engine supply line. The fuel system includes a fuel discharge valve disposed on the fuel distribution system for removing fuel from the fuel distribution system.

System for adapting an internal combustion engine to be powered by gaseous fuel in gas phase and by gaseous fuel, an internal combustion engine arrangement comprising the system and a method for adapting an internal combustion liquid fuel engine to be powered by gaseous fuel in gas phase and gaseous fuel in liquid phase.