This disclosure includes fuel tank fittings, fuel systems and fueling stations having the same, and related methods. Some fuel tank fittings have a first end including a connector configured to be sealingly coupled to an outlet of a fuel tank, wherein the connector has a connection axis, a second end including two or more first ports, each positioned such that the connection axis does not extend therethrough, a first interior passageway extending from the connector, and two or more second interior passageways connecting the first interior passageway to the first ports such that, for each of the first ports, fluid is permitted to flow from the connector, through the first interior passageway, through one or more of the second interior passageways, and out of the first port without flowing through a valve.

A combustion pre-chamber device for a spark ignition internal combustion engine is configured to engage a spark plug and be mounted to a cylinder head in communication with a combustion chamber of a cylinder of the engine. The combustion pre-chamber device includes a number of bores that open at an outer surface thereof that extend into the body and receive a coolant flow to provide cooling for a combustion pre-chamber of the combustion pre-chamber device.

A gas tank arrangement for a dual fuel internal combustion engine includes gas tank for containing a combustible gas, wherein the gas tank arrangement further includes an additional gas tank downstream the gas tank, wherein the additional gas tank is configured to be arranged in upstream fluid communication with an air inlet of the dual fuel internal combustion engine for delivery of combustible gas to the dual fuel internal combustion engine via the air inlet.

This disclosure includes fuel systems having multi-tank pressure-relief devices and related methods. Some fuel systems have two or more fuel tanks, each containing fuel at a pressure at or above 3,000 pounds per square inch (psi), two or more pressure-relief devices (PRDs) configured to receive fuel from the fuel tanks and vent the received fuel in response to temperature, and fuel conduits coupling the fuel tanks to the PRDs such that, for each of the fuel tanks, for each of the PRDs, fuel is permitted to flow from the fuel tank to the PRD without flowing through a valve that is not one of the PRDs.

A reserve fuel tank retention and control (RTRC) module and a method of operating a vehicle including an engine and a main fuel tank containing a fuel, the method including mounting the RTRC module onto the vehicle; fluidly connecting the RTRC module to the engine and to the main fuel tank; actuating a valve of the RTRC module for a predetermined time to purge moisture in a fuel supply hose into the engine; and upon the main fuel tank becoming empty, actuating the valve to allow fuel from the reserve fuel tank to supply the engine.

A feedstock delivery system transfers a carbonaceous material, such as municipal solid waste, into a product gas generation system. The feedstock delivery system includes a splitter for splitting bulk carbonaceous material into a plurality of carbonaceous material streams. Each stream is processed using a weighing system for gauging the quantity of carbonaceous material, a densification system for forming plugs of carbonaceous material, a de-densification system for breaking up the plugs of carbonaceous material, and a gas and carbonaceous material mixing system for forming a carbonaceous material and gas mixture. A pressure of the mixing gas is reduced prior to mixing with the carbonaceous material, and the carbonaceous material to gas weight ratio is monitored. A transport assembly conveys the carbonaceous material and gas mixture to a first reactor where at least the carbonaceous material within the mixture is subject to thermochemical reactions to form the product gas.

A gas tank arrangement for a dual fuel internal combustion engine includes gas tank for containing a combustible gas, wherein the gas tank arrangement further includes an additional gas tank downstream the gas tank, wherein the additional gas tank is configured to be arranged in upstream fluid communication with an air inlet of the dual fuel internal combustion engine for delivery of combustible gas to the dual fuel internal combustion engine via the air inlet.

A feedstock delivery system transfers a carbonaceous material, such as municipal solid waste, into a product gas generation system. The feedstock delivery system includes a splitter for splitting bulk carbonaceous material into a plurality of carbonaceous material streams. Each stream is processed using a weighing system for gauging the quantity of carbonaceous material, a densification system for forming plugs of carbonaceous material, a de-densification system for breaking up the plugs of carbonaceous material, and a gas and carbonaceous material mixing system for forming a carbonaceous material and gas mixture. A pressure of the mixing gas is reduced prior to mixing with the carbonaceous material, and the carbonaceous material to gas weight ratio is monitored. A transport assembly conveys the carbonaceous material and gas mixture to a first reactor where at least the carbonaceous material within the mixture is subject to thermochemical reactions to form the product gas.

An engine device, which employs various types of fuels, plural fuel pipes can compactly be disposed without being thermally affected by exhaust gas. In the engine device, a gas fuel pipe that supplies gas fuel to a gas injector, a fuel oil pipe that supplies liquid fuel to a main fuel injection valve are disposed to be divided on both sides of a row of head covers arranged in a line. In addition, in the engine device, an intake manifold that supplies air taken in by a main combustion chamber toward an intake valve extends in parallel to the row of head covers in a cylinder block, and the fuel gas pipe and the intake manifold are arranged on the same side of the row of head covers.

Novel methods and devices to operate internal combustion engines on ethane fuel and blends of ethane fuel are provided where the pressure is controlled to maintain a liquid or vapor phase of the fuel and the fuel is admitted into the engine in a controlled and consistent manner for highly efficient engine performance.