Abstract:
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.
Abstract:
A fuel holding device is secured to a vehicle by means of straps and brackets, which sits on a system of gaskets to prevent longitudinal sliding and rotation. A gasket system for preventing longitudinal sliding is disposed circumferentially around the tank body, and between the tank body and a circumferential bracket system that includes a U-shaped strap and an L-shaped bracket. The gasket system comprises a wedge-shaped base and a slider portion, with the U-shaped strap secured around the slider portion. A system for preventing rotation of a fuel-holding device has a circumferential wedge gasket segment, or a corrugated segment, positioned at a gap between the U-shaped strap and the L-shaped bracket.
Abstract:
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.
Abstract:
In an internal combustion engine, gaseous fuel is injected in a first injection through a pre-combustion chamber into the combustion chamber to mix with air in the combustion chamber. The pre-combustion chamber has a jet aperture in fluid communication between the pre-combustion chamber and the combustion chamber. Mixed gaseous fuel and air is then ingested into the pre-combustion chamber from the combustion chamber and ignited. In a second injection, injecting gaseous fuel into the pre-combustion chamber and expelling, with the second injection, ignited gaseous fuel and air from the pre-combustion chamber through the jet aperture and into the combustion chamber as a flaming jet with a core of gaseous fuel.
Abstract:
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.
Abstract:
This application concerns systems and methods for compressing natural gas with an internal combustion engine. In a representative embodiment, a system for compressing a gas comprises a reciprocating internal combustion engine including at least one piston-cylinder assembly comprising a piston configured to travel in a cylinder and to compress gas in the cylinder in multiple compression stages. The system can further comprise a first pressure tank in fluid communication with the piston-cylinder assembly to receive compressed gas from the piston-cylinder assembly until the first pressure tank reaches a predetermined pressure, and a second pressure tank in fluid communication with the piston-cylinder assembly and the first pressure tank. The second pressure tank can be configured to receive compressed gas from the piston-cylinder assembly until the second pressure tank reaches a predetermined pressure. When the first and second pressure tanks have reached the predetermined pressures, the first pressure tank can be configured to supply gas to the piston-cylinder assembly, and the piston can be configured to compress the gas supplied by the first pressure tank such that the compressed gas flows into the second pressure tank.
Abstract:
A method for converting a fuel-injected diesel engine to be powered by natural gas includes removing a fuel injector from a cylinder of the engine, replacing the removed fuel injector with a combined fuel injection and ignition unit having a natural gas flow path and an ignition device, coupling the natural gas flow path to a pressurized natural gas fuel supply, and connecting the ignition device to an ignition control system. The combined fuel injection and ignition unit is configured to inject the natural gas into the cylinder, and the ignition device is configured to ignite the natural gas in the cylinder, under control and coordination of the ignition control system for operation of the engine.
Abstract:
An apparatus and method for supplying gaseous fuel from a tender car to an internal combustion engine on a locomotive comprising storing the gaseous fuel at a cryogenic temperature in a cryogenic storage tank on the tender car; pumping the gaseous fuel to a first pressure from the cryogenic storage tank; vaporizing the gaseous fuel at the first pressure; and conveying the vaporized gaseous fuel to the internal combustion engine; whereby a pressure of the vaporized gaseous fuel is within a range between 310 bar and 575 bar.
Abstract:
A gas-engine-powered handheld working machine has a working unit driven by a engine capable of running on a gas fuel supplied from a gas cartridge. The gas cartridge is arranged such that when the handheld working machine is disposed in a normal rest position where the handheld working machine is placed on a horizontal plane with a bottom surface of a machine body lying flat on the horizontal plane, the gas cartridge is disposed in a substantially vertical position with a discharge nozzle directed downwards while a central axis of the gas cartridge extends substantially perpendicular to the horizontal plane.
Abstract:
A method for detecting the high-pressure sealing performance of a gas system after an impact test of a compressed natural gas vehicle, including installing a high-pressure sensor with a characteristic curve on an air inlet pipe of a pressure reducer, and inflating a high-pressure pipeline with compressed gas under a safe pressure; inflating the gas system with compressed gas to a normal working pressure before the impact test of the compressed natural gas vehicle; collecting a voltage value by the high-pressure sensor within 1-3 hours, and determining that the sealing performance of the gas system of the compressed natural gas vehicle is satisfactory when a detected voltage drop value is smaller than a preset value; otherwise, determining that the sealing performance of the gas system of the compressed natural gas vehicle is unsatisfactory.