This disclosure describes an assembly for gas (e.g., compressed natural gas) storage. The assembly includes multiple gas storage tanks, with each tank coupled to a separate sub-assembly that includes a pressure gauge, shutoff valve, and pressure relief device (PRD), providing for independent pressure monitoring, shutoff, and pressure relief for each of the tanks.

The present invention disclosed a system for generating and supplying hydrogen gas to an internal combustion engine. The system comprises at least one hydrogen generator unit configured to generate hydrogen gas from water received from a primary water tank connected to the hydrogen generating unit. The hydrogen generating unit is also connected to an electrical control unit of the hydrogen generator unit which controls supply of power from a power supply unit for the electrolysis of water at the hydrogen generating unit. The hydrogen generating unit also connected to a car electrical control unit whereby through the operation of the electrical control unit of the hydrogen generating unit connected to the car electrical control Unit it enables the system to control activation/deactivation of the hydrogen generating unit, the output rate of the hydrogen to be generated, the quantity of the hydrogen to be supplied to the engine system through a back fire prevention unit disposed between the primary water tank and the engine system.

A gas control system of a non-road gas engine and a gas control method thereof are disclosed by the present disclosure. The gas control system includes a mixer, the mixer is provided with an air inlet, a gas inlet and a mixed gas outlet respectively, the air inlet is provided with a first pressure sensor, the gas inlet is provided with a second pressure sensor and a pressure regulating valve that are spaced apart, and the mixed gas outlet is provided with a third pressure sensor; the first pressure sensor, the second pressure sensor, the pressure regulating valve and the third pressure sensor are respectively electrically connected to a controller, and the controller controls an opening degree of the pressure regulating valve according to pressure information fed back by the first pressure sensor, the second pressure sensor and the third pressure sensor so as to adjust an air-gas ratio of the mixed gas. The system has a simple structure. By disposing a pressure regulating valve at the gas inlet, the pressure of the gas entering the mixer is controlled, and the air-gas ratios required under various working conditions are controlled, which realizes a closed-loop control so that a control range of the air-gas ratio is smaller, the accuracy is higher, and a transient response speed of the engine is improved.

The present disclosure relates to a pressure stabilizer, a gas engine system and a gas pressure control method. The pressure stabilizer includes: a housing, which comprises a gas intake chamber and a piston chamber, wherein a spacer is provided between the gas intake chamber and the piston chamber, and the spacer is provided with a spacer through hole; a piston, which is slidably disposed in the piston chamber and which is provided therein with a piston through hole passing through the piston; a spring disposed in the piston chamber, wherein the spring is disposed between the piston and the spacer; a gas outlet end cap, which is disposed at an open end of the piston chamber and which is provided with a gas outlet; and an electromagnetic coil, which is disposed at an end of the gas outlet end cap that is close to the piston, wherein the electromagnetic coil generates a magnetic field force for attracting the piston in an energized state, so as to attract the piston to approach the gas outlet end cap.

A method for controlling an internal combustion engine includes receiving a request for a desired output from the internal combustion engine, receiving sensor information indicative of at least an engine speed or a pressure of gas provided to the internal combustion engine, and setting a changeable limit associated with a supply of air and fuel to the internal combustion engine. The method also includes, based at least in part on the received sensor information, changing the changeable limit to define a changed limit and reducing an output of the internal combustion engine based on the changed limit.

A system, apparatus, and method for controlling an engine system can provide fuel reactivity compensation control for an engine of the engine system. Pilot fuel quantity supplied to the engine can be controlled using a nitrous oxide (NOx) error. Likewise, air-to-fuel ratio (AFR) for the engine can be controlled using the NOx error. Each of a pilot fuel offset and an AFR control trim can be generated using the NOx error. The pilot fuel offset and the AFR control trim can be used to control the pilot fuel quantity and the AFR, respectively.

A method for controlling an internal combustion engine includes receiving a request for a desired output from the internal combustion engine, receiving sensor information indicative of at least an engine speed or a pressure of gas provided to the internal combustion engine, and setting a changeable limit associated with a supply of air and fuel to the internal combustion engine. The method also includes, based at least in part on the received sensor information, changing the changeable limit to define a changed limit and reducing an output of the internal combustion engine based on the changed limit.

A method for measuring pressure of a gaseous fuel compressed in a feed system of an engine equipping a motor vehicle, by a pressure measuring device having an infrared quality sensor and an electronic control unit, the measuring method being characterized in that it consists in determining a corrected absorbance value of the fuel based on absorbance measurements performed by infrared analysis, at preset wavelengths, and in comparing the value to a nominal absorbance value, determined beforehand based on absorbance measurements performed at a nominal pressure after a pressure stabilization phase of the fuel and at the same said wavelengths, in order to determine the fuel pressure.

A method for detecting reverse flow for a dual fuel engine is disclosed. The engine may include an intake manifold, a liquid fuel supply line and a gaseous fuel supply line, the gaseous fuel supply line including a gaseous fuel supply and a gaseous fuel rail. The method may include: operating the dual fuel engine in a liquid fuel only mode via the liquid fuel supply line; determining a reverse flow in the gaseous fuel supply line; and outputting an indication of reverse flow in response to the determination of reverse flow.

The present invention relates to a method for controlling injection of a gaseous fuel, such as hydrogen or a hydrogen based gas, and a water-based fluid medium into a combustion engine. The method comprises the steps of: in a first operational mode injecting the gaseous fuel and optionally a water based fluid medium into a combustion chamber of the engine at a relatively high pressure; in a second operational mode injecting water as liquid into engine to reduce the temperature and pressure inside the combustion chamber, and injecting the gaseous fuel into the combustion chamber at a relatively low pressure.