Patent application number | Description | Published |
20100139263 | PISTON ENGINE - A Stirling engine has a fluid passage that connects a low temperature-side actuating fluid space and a crankcase inner space, and a passage opening/closing valve that is provided in the fluid passage and that opens and closes the fluid passage. The passage opening/closing valve enables communication through the fluid passage upon startup of the Stirling engine, and shuts off communication through the fluid passage when the rotational speed of the crankshaft of the Stirling engine is equal to or greater than a pre-established start-enabling rotational speed. | 06-10-2010 |
20100146962 | PISTON ENGINE - A Stirling engine is provided with a fluid passage that connects a low temperature-side actuating fluid space and a crankcase inner space, and a passage opening/closing valve that is provided in the fluid passage and that opens and closes the fluid passage. Upon stopping of the Stirling engine, the passage opening/closing valve enables communication through the fluid passage, at a region at which the piston floats in the cylinder. This region is determined based on the pressure of an actuating fluid in the actuating fluid space and the rotational speed of a crankshaft of the Stirling engine. | 06-17-2010 |
20100257857 | STIRLING ENGINE - A Stirling engine includes a plurality of α-type Stirling cycle mechanisms, each of which includes a first piston and a second piston and pressurizes a crankcase space. The mechanisms are coupled to each other via a common rotary shaft so that each of the mechanisms generates a torque variation waveform in which the number of periods per rotation is two. | 10-14-2010 |
20110056466 | WORKING GAS CIRCULATION ENGINE - A combustion chamber to which a reactant and a working gas whose specific heat ratio is higher than that of air are supplied and in which the working gas can expand following a reaction of the reactant, a circulation path capable of re-supplying the working gas into the combustion chamber by causing the working gas to circulate from an exhaust side to a suction side of the combustion chamber, supplying means that supplies the reactant, a concentration detection means capable of detecting a concentration of the reactant in the circulation path, and a supply control means that sets at least a first supply rate of the reactant by the supplying means in a time for starting based on the concentration of the reactant detected by the concentration detection means before a start of supplying of the reactant by the supplying means are included and so proper starting can be assured. | 03-10-2011 |
20110197755 | GAS LUBRICATION STRUCTURE FOR PISTON, AND STIRLING ENGINE - A gas lubrication structure is provided with a high-temperature-side cylinder, an expansion piston lubricated relative to the high-temperature-side cylinder by gas, and a layer provided to the outer peripheral surface of the expansion piston and composed of a material flexible and having a higher linear expansion coefficient than the base material of the expansion piston. The thickness of the layer under normal temperatures is not less than the size of the clearance formed between the layer and the high-temperature-side cylinder. Also, even if the layer is thermally expanded under use conditions, the layer under normal temperatures has a thickness enabling a clearance to be formed between the layer and the high-temperature-side cylinder. | 08-18-2011 |
20110209691 | WORKING GAS CIRCULATION ENGINE - A working gas circulation engine includes a combustion chamber that can expand a working gas, which has a specific heat ratio higher than that of the air, with the combustion between an oxidizing agent and a fuel; a circulation path that can allow the working gas to circulate from a suction side to an exhaust side of the combustion chamber and can supply the same again to the combustion chamber; a feed means that can feed the gas in a pressure-reduction target section, which is the section whose pressure is to be reduced, to the outside, and a control means that operates the feed means for feeding the gas in the pressure-reduction target section, when the pressure in the pressure-reduction target section is higher than a predetermined pressure that is set in advance. | 09-01-2011 |
20110232276 | STIRLING ENGINE AND CONTROL METHOD THEREOF - A Stirling engine includes a high-temperature side cylinder and an expansion piston that is subjected to gas lubrication, or more specifically static pressure gas lubrication, relative to the high-temperature side cylinder and has a layer on an outer peripheral surface thereof, the layer being formed from a flexible material having a higher linear expansion coefficient than a base material of the expansion piston, wherein a booster pump and a ECU are provided as a contact avoiding device to prevent the expansion piston from contacting the high-temperature side cylinder when an engine operation is stopped until a temperature of the expansion piston can be suppressed below a predetermined value. | 09-29-2011 |
20110278756 | SILICA STRUCTURE AND METHOD OF PRODUCING THE SAME, AND HEAT INSULATING MATERIAL - A silica structure includes mesoporous silica spheres; and connection portions each of which includes metal oxide, and each of which connects the mesoporous silica spheres to each other. | 11-17-2011 |
20120042645 | CONTROL DEVICE FOR STIRLING ENGINE - A control device for a Stirling engine including: two cylinder units; and a decompression portion that brings about a decompression effect of reducing a degree of compression of a working fluid that flows back and forth between the two cylinder units, by letting out the working fluid that flow back and forth between the two cylinder units, when the Stirling engine is started; the control device including a control portion that controls the decompression portion so that the decompression effect is gradually weakened after the Stirling engine is started. | 02-23-2012 |
20120159936 | EXHAUST PIPE - An exhaust pipe through which an exhaust port of an internal combustion engine and a catalyst for purifying an exhaust gas of the internal combustion engine are connected to each other includes a porous portion that is provided on at least a part of an inner peripheral face of the exhaust pipe. A thermal conductivity that the porous portion exhibits in a high temperature state where a temperature of the exhaust gas is as high as it is required to radiate a heat of the exhaust gas through the exhaust pipe is at least ten times higher than a thermal conductivity that the porous portion exhibits in a low temperature state where the temperature of the exhaust gas is as low as it is required to warm the catalyst up. | 06-28-2012 |
20120318486 | HEAT EXCHANGER FOR STIRLING ENGINE - A heat exchanger for a stirling engine | 12-20-2012 |