Patent application number | Description | Published |
20080245349 | Internal Combustion Engine and Control Method Thereof - An operating gas circulation type internal combustion engine that uses argon as the operating gas, for example, and includes a hydrogen and oxygen supply portion, an argon supply amount regulating portion, and an electric control unit. The electric control unit determines the amount of hydrogen and oxygen to be supplied to a combustion chamber based on a required torque, which is the torque required of the internal combustion engine, and supplies the determined amounts of hydrogen and oxygen to the combustion chamber using the hydrogen supply portion and the oxygen supply portion. Further, the electric control unit determines an amount of operating gas to be supplied to the combustion chamber according to the required torque, and controls the argon supply amount regulating portion such that the determined amount of operating gas is supplied to the combustion chamber. | 10-09-2008 |
20090013686 | Exhaust heat recovery apparatus - An exhaust heat recovery apparatus includes a reciprocating internal combustion engine in which a piston reciprocates in a cylinder to generate motive power; and a Stirling engine that recovers the thermal energy of the exhaust gas discharged from the internal combustion engine and converts the thermal energy into kinetic energy. The Stirling engine is united with the internal combustion engine. A heater that the Stirling engine includes is disposed in an exhaust manifold of the internal combustion engine. With this configuration, it is possible to restrict reduction in the power output from the exhaust heat recovery means. | 01-15-2009 |
20090094980 | Exhaust Heat Recovery Apparatus - An exhaust heat recovery apparatus includes a Stirling engine and a clutch. The Stirling engine produces motive power by recovering thermal energy from exhaust gas discharged from an internal combustion engine from which exhaust heat is recovered. The motive power produced by the Stirling engine is transmitted to an internal combustion engine transmission through the clutch and an exhaust heat recovery device transmission, and combined with the motive power produced by the internal combustion engine through the internal combustion engine transmission, and is output from an output shaft. If rapid acceleration is required, and the increase in the rotation speed of the Stirling engine therefore lags behind the increase in the rotation speed of the internal combustion engine, the clutch is released. With this configuration, reduction in the power output from the heat engine, from which exhaust heat is recovered, is restricted, and the degradation of the acceleration performance is minimized. | 04-16-2009 |
20090188476 | WORKING-GAS-CIRCULATION-TYPE ENGINE - In an engine | 07-30-2009 |
20100043427 | POWER TRANSMISSION MECHANISM AND EXHAUST HEAT RECOVERY APPARATUS - A power transmission mechanism that transfers power from an output shaft disposed in sealed-off space within a power generation unit includes: a drive shaft to which the power from the output shaft is transmitted; a first magnet that is fitted to the drive shaft and that rotates together with the drive shaft; a second magnet that is fitted to a driven shaft, which is arranged concentrically with the drive shaft, that is disposed outside the sealed-off space, and that faces the first magnet; and a partition wall that is interposed between the first magnet and the second magnet, and that separates a drive shaft side space and a driven shaft side space from each other. | 02-25-2010 |
20100300416 | INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING THE INTERNAL COMBUSTION ENGINE - During starting of an engine that has a circulation path through which argon, used as working gas, is circulated back to a combustion chamber and that uses hydrogen as fuel during operation, oxygen is supplied in such a manner that the oxygen supply ratio is higher than that used during normal operation. Thus, the entirety of hydrogen supplied into the combustion chamber reacts with oxygen and is burned. When the engine is being started, because gas is not turbulent enough, hydrogen and oxygen are likely to be mixed poorly. Therefore, when oxygen is supplied in such a manner that the ratio of oxygen supply amount to the hydrogen supply amount is higher than the theoretical ratio, even if oxygen and hydrogen are not mixed so well, the chance that hydrogen contacts oxygen is increased. As a result, combustion takes place in a more appropriate manner, which improves the engine startability. | 12-02-2010 |
20110067383 | WORKING GAS CIRCULATION ENGINE - A working gas circulation engine includes a combustion chamber that is supplied with fuel, the combustion product of which is condensed, and working gas that generates power with the use of combustion of the fuel and that has a specific heat ratio higher than that of air, a circulation path that connects an inlet and an outlet of the combustion chamber to each other in such a manner that the working gas is circulated back to the combustion chamber without being released into the atmosphere, and two condensers that are provided in the circulation path, that are supplied with exhaust gas which contains the combustion product and the working gas, and that condense and remove the combustion product. | 03-24-2011 |
20110067664 | GAS CIRCULATION ENGINE - A gas circulation engine includes a combustion chamber to which high-pressure fuel in a first high-pressure fuel supply passage, an oxidant and working gas are supplied; a circulation path that connects an intake-side portion and an exhaust-side portion of the combustion chamber to each other; a fuel bleed-off tank into which the high-pressure fuel in the first high-pressure fuel supply passage is bled off; a fuel bleed-off valve that permits or shuts off communication between the first high-pressure fuel supply passage and the fuel bleed-off tank; and a fuel bleed-off control unit that permits communication between the first high-pressure fuel supply passage and the fuel bleed-off tank by opening the fuel bleed-off valve when the engine is stopped, the communication between the first high-pressure fuel supply passage and the fuel bleed-off tank being shut off during operation of the engine. | 03-24-2011 |