Abstract:
An embodiment of the present invention is a portable hydrogen generation system for operating a vehicle powered by either the hydrogen internal combustion engine or a fuel cell using active metals such as sodium potassium, magnesium, aluminum or iron in the form of an emulsion, and a method thereof. The emulsion comprises a metal powder pre-mixed with oil. In the case of sodium, potassium and magnesium, the metal is reacting with water at or near room temperature. However, in the case of aluminum and iron, the metal is reacting with alkali hydroxide solutions. The system is controlled and managed by a microprocessor in order to generate hydrogen on demand at or near room temperature with a very high efficiency.
Abstract:
An apparatus for diagnosing and controlling combustion of an internal combustion engine is provided which makes smooth operation of an engine possible by adjusting the combustion condition at the occurrence of knock, misfire, and flame quenching and also makes it possible to detect the occurrence of abnormality in cylinder pressure detectors without delay and deal with the abnormality without stopping the operation of the engine. The apparatus comprises a means to calculate the maximum pressure ratio Pp/P0, Pp being the maximum cylinder pressure, P0 being the compression pressure at one or a plurality of crank angles in the compression stroke, a means to compare said Pp/P0 with pressure ratios (threshold pressure ratios) predetermined for each of diagnosis categories, and a means(step) to diagnose the combustion condition such as cylinder pressure by judging the result of said comparison every cycle or every plural cycle. For example, the ratio of the pressure P1 at a crank angle in the combustion stroke to said pressure P0 in the compression stroke, i.e. combustion pressure ratio P1/P0 is calculated, when said maximum pressure ratio Pp/P0 is equal to or smaller than the predetermined permissible minimum pressure ratio (Pp/P0nullPn) and at the same time said combustion pressure ratio P1/P0 is equal to or smaller than the predetermined pressure ratio Pm of misfire (P1/P0nullPm), a misfire is judged to have occurred in the combustion chamber.
Abstract:
In a fuel gas mixer 1 comprising a throttle valve 4 provided in an air intake passage 2 connected to an engine for opening and closing the air intake passage 2 and a fuel gas supply passage 6 connected to the air intake passage 2 upstream of the throttle valve 4. A fuel gas control valve 5 is provided in the air intake passage 2 upstream of the connecting part of the fuel gas supply passage 6 for opening and closing the air intake passage 2, and a fuel gas control valve controlling means 11 is provided for varying the degree of the opening of the fuel gas control valve 5 depending upon the operating state of the engine.
Abstract:
A liquified gas delivery system for a motorized platform includes a holding tank configured to receive liquified gas. A first conduit extends from a vapor holding portion of the tank to a valve device. A second conduit extends from a liquid holding portion of the tank to the valve device. Fluid coupled to the valve device is a vaporizer which is in communication with an engine. The valve device selectively withdraws either liquified gas or liquified gas vapor from the tank depending on the pressure within the vapor holding portion of the tank. Various configurations of the delivery system can be utilized for pressurizing the tank during operation.
Abstract:
A power plant comprises a combustion chamber (1), in which combustion of a combustible matierla is intented to take place while forming hot combustion gases, a gas turbine device (13, 14, 20, 27, 30) which is arranged to be driven by the combustion gases, and a topping combustor (8, 23) which is arranged to receive the combustion gases and increase a temperature thereof to a level suitable for the gas turbine device. Furthermore, there is a gasifying reactor (10) which is arranged to produce a combustible gas for combustion in the topping combustor (8, 23) in order to accomplish said increase of temperature. The gasifier (10) is connected to a conduit member (18) which is arranged to supply an oxygen-containing gas, needed for the gasification, to the gasifier, and which comprises means (34, 35, 36, 37) which are arranged to affect the flow of said oxygen-containing gas, supplied to the gasifier (10), to a desired level.
Abstract:
A method and apparatus are provided for supplying liquid gas as fuel to an internal combustion engine. From the liquid gas stream that is supplied to at least one liquid gas injection valve of the internal combustion engine, a portion is branched off and expanded. The liquid gas stream supplied to the internal combustion engine is cooled with coldness that results during the expansion, thus ensuring that the liquid gas stream supplied to the liquid gas injection valve is at least substantially liquid. The expanded liquid gas is supplied in a vaporous state to the internal combustion engine.
Abstract:
In a gaseous fuel supply apparatus with a shut-off valve, the valve includes a valve housing provided in a gas flow unit for supplying gaseous fuel from a fuel tank to a combustion engine, a seal member surrounding a valve port between a first port connecting to the tank and a second port connecting the engine in the housing, a valve member movable between a closed position at which the valve member is in contact with the seal member to close the valve port and an open position at which the valve member separates from the seal member to open the valve port, and a drive unit for driving the movement of the valve member by electromagnetic force.
Abstract:
An air-natural gas carburetor for a constant load stationary internal combustion engine including an air inlet passage connected to the intake manifold of an engine, a manually-controlled air valve in the inlet passage, a gas inlet conduit entering the air inlet passage and terminating in a discharge opening; a downstream pressure gas regulator supplying a constant gas pressure to the gas conduit and a manually-controlled valve in the gas conduit between the pressure regulator and the discharge opening which is independent in operation from the air valve.
Abstract:
A method of operating an internal combustion engine under high charge dilution conditions using a hydrogen-rich fuel is disclosed. The high charge dilution conditions are attained by diluting the hydrogen-rich fuel with gases such as excess air or recycled exhaust gas. The mixture to be charged to the combustion chamber is thoroughly mixed before it is introduced into the combustion chamber while the combustion chamber maintains a substantially quiescent state such that the charge mixture is introduced with an angular momentum lower than that of a typical low emission engine. The result is an internal combustion engine with both high efficiency and low emissions, particularly, low NOx emissions.
Abstract:
A gas injection device in which an tunnel-like inner room is formed by surrounding with an inner wall, the inner room is communicated to the intake air flow passage of the intake pipe to allow the intake air to flow through the inner room, the inner wall is surrounded with an outer wall to form between the inner wall and outer wall an outer gas chamber into which fuel gas is introduced, and gas injection holes are provided in the inner wall to permit the gas in the outer gas chamber to sprout out from the injection holes into the air stream flowing through the inner room. The inner room may be partitioned into a plurality of tunnel-like rooms to correspond to the number of the intake air passages in the cylinder head.