The present invention provides a gas turbine combustor that has a fuel injection nozzle using a fluid other than liquid fuel to atomize the liquid fuel and that can suppress a reduction in power generation efficiency resulting from a heat loss while promoting the atomization of the liquid fuel. The gas turbine combustor is adapted to mix liquid fuel with combustion air led from a compressor, burn the mixture, and supply combustion gas generated to a gas turbine. The gas turbine combustor includes a fuel injection nozzle that atomizes the liquid fuel into fine liquid droplets. The fuel injection nozzle includes a first system adapted to supply the liquid fuel and a second system adapted to supply a fluid for atomizing the liquid fuel. Low-boiling liquid fuel is supplied to the second system as the fluid. The second system is adapted to heat and supply the low-boiling liquid fuel.

Gas turbine combustor

A valve opening-closing timing control device includes a housing member rotating together with one of a cam shaft and a crank shaft of a combustion engine, a rotor member rotatably attached to said housing member; and rotating together with the other of said crank shaft and said cam shaft, a hydraulic pressure chamber formed between said housing member and said rotor member, the hydraulic pressure chamber being divided into an advance angle hydraulic chamber and a retard angle hydraulic chamber by a vane integrally provided with said rotor member, a lock mechanism including a lock member movably provided at the housing member and a receiving portion formed at said rotor member for receiving the lock member, whereby the lock mechanism restricts a relative rotation between the rotor member and the housing member by advancing the lock member into the receiving portion and allows the relative rotation between the rotor member and the housing member by retracting the lock member from the receiving portion, a hydraulic pressure circuit for supplying hydraulic fluid to said advance angle hydraulic chamber, said retard angle hydraulic chamber, and said lock mechanism, and a projecting portion formed at a bottom of said receiving portion and including a top end face smaller than a sectional area of said lock member.

Valve opening-closing timing control device

A gas sensor element has a solid electrolyte body of oxygen ionic conductivity, a target gas electrode and a reference gas electrode formed on both surfaces of the solid electrolyte body, respectively, a porous diffusion resistance layer, and a catalyst support trap layer. The porous diffusion resistance layer covers the target gas electrode and through which target gases to be measured are passing. The catalyst support trap layer is formed on the outer surface of the porous diffusion resistance layer and supports noble metal catalyst. In the gas sensor element, the noble metal catalyst is made of platinum, rhodium, palladium supported in the catalyst support trap layer. In particular, an addition amount of palladium in the total amount of the noble metal catalyst is within a range of 2 to 65 wt %.

Gas sensor element

A seal plate partitions a sectorial space which houses a vane and a circumferential groove which houses a torsion spring, so that the sectorial space is formed to prevent the communication between an advance angle pressure chamber and a retard angle pressure chamber regardless of the space of the circumferential groove. As a result, by setting the inner diameter of the vane smaller than the outer diameter of the torsion spring, the outer diameter of the vane can be made relatively small without lowering the engine performance. Therefore, it is possible to reduce the actuator in size without lowering the engine performance, to reduce the weight of a valve timing adjusting device and to obtain a mounting space easily for mounting the valve timing adjusting device on the engine.

Valve timing adjusting device

In a valve timing controller, the guide-groove biases the moving element in a direction in which the moving element slides with respect to a radial line connecting a center of the guide-rotational element and the moving element, when the guide-rotational element relatively rotates with respect to the first rotational element. The direction in which the moving elements are pushed and the direction in which the moving elements moves are substantially identical to each other.

Valve timing controller

It is an object to provide a continuously variable valve timing adjusting device to improve valve timing advance response for an internal combustion engine. The device, capable of continuously and variably controlling the intake valve timing phase, includes: an advance chamber which hydraulically rotates a vane rotor and a camshaft on the advance side relative to the timing rotor; a retard chamber for rotating the camshaft on the retard side relative to the timing rotor; an advance-retard oil pressure control valve; an oil communicating passage for fluid communication between the advance chamber and the retard chamber; a hydraulic piston, flow control valve which controls the oil in the communicating passage according to the retard chamber pressure when the engine is running at a low speed and a high oil temperature; and a ball valve check valve which checks the oil flow from the advance chamber to the retard chamber.

Valve timing adjusting device for internal combustion engine

Provided is a laser ignition device installed in an internal combustion engine (90), laser light generated by laser oscillators (5, 6, 7) being condensed in a combustion chamber (900) by condensing lenses (77, 78) to generate a high-energy flame kernel for ignition. The laser ignition device has at least a highly refractive optical element (76) for refracting and changing the travel direction of the optical axes (OPX1 to OPXn) of a plurality of laser beams generated through the intermediary of a resonator (74) by a plurality of semiconductor lasers (5-1 to 5-n), and condensing means (77, 78) for causing the laser beams refracted by the highly refractive optical element (76) to be condensed at a plurality of positions (FP1 to FPn) in the combustion chamber (900).

Laser ignition device

An air-fuel ratio control system for a gas-fueled engine which is capable of achieving the combustion in a target air-fuel ratio to surely purify an exhaust gas through an exhaust purification catalyst. In the air-fuel ratio control system, a three-way catalytic converter is placed in an exhaust pipe of the engine and an O2 sensor is located on the upstream side of the three-way catalytic converter. The O2 sensor comprises an element, and an atmosphere side electrode is formed on an inner surface of the element while an exhaust gas side electrode is formed on an outer surface thereof. The exhaust gas side electrode is coated with a catalyst layer which can remove hydrogen through a catalytic reaction. A control unit of the control system controls a fuel supply quantity by a gas injector using a feedback correction coefficient on the basis of the output of the O2 sensor, thereby reducing the deviation between an air-fuel ratio measured by the O2 sensor and a target air-fuel ratio.

Air-fuel ratio control system and gas sensor for engines

In a laser ignition apparatus, a focusing optical element is configured to focus a pulsed laser light to a predetermined focal point in a combustion chamber of an engine. An optical window member is arranged on the combustion chamber side of the focusing optical element so as to separate the focusing optical element from the combustion chamber. A catoptric-light focal point, at which a catoptric light is to be focused, is positioned on the anti-combustion chamber side of a combustion chamber-side end surface of the optical window member. The catoptric light results from the reflection of the pulsed laser light by a pseudo mirror that is formed by the optical window member when the combustion chamber-side end surface thereof is fouled with contaminants. Further, the catoptric-light focal point falls in a region where no solid material forming either the focusing optical element or the optical window member exists.

Laser ignition apparatus

Es ist eine Aufgabe, eine stufenlos variable Ventilzeitabstimmung der Einstellvorrichtung zum Verbessern des Ventilzeitabstimmungsvorstellansprechens fur einen Verbrennungsmotor zu schaffen. Die Vorrichtung, die in der Lage ist, die Einlassventilzeitabstimmungsphase stetig bzw. stufenlos und variabel zu steuern, weist folgendes auf: Eine Vorstellkammer (24), die einen Flugelrotor (3) und eine Nockenwelle an der Vorstellseite relativ zu dem Zeitabstimmungsrotor (1) hydraulisch dreht; eine Verzogerungskammer (25) zum Drehen der Nockenwelle (2) an der Verzogerungsseite relativ zu dem Zeitabstimmungsrotor (1); ein Vorstell-Verzogerungs-Oldrucksteuerungsventil (40); einen Olverbindungsdurchgang (49) fur eine Fluid-Verbindung zwischen einer Vorstellkammer (24) und der Verzogerungskammer (25); einen Hydraulikkolben (53), ein Stromungsventil (50), das das Ol in dem Verbindungsdurchgang (49) gemas dem Verzogerungskammerdruck (25) steuert, wenn der Motor bei einer niedrigen Drehzahl und einer hohen Oltemperatur lauft; und ein Ruckschlagkugelventil (70), das die Olstromung von der Vorstellkammer (24) zu der Verzogerungskammer (25) absperrt.

Kenji Kanehara

Papers

Valve timing adjusting device for internal combustion engine

Laser ignition device

Air-fuel ratio control system and gas sensor for engines

Laser ignition apparatus

Ventilzeitabstimmungseinstellvorrichtung für einen Verbrennungsmotor