Abstract: A hybrid machine with a hydraulic drive device having hydraulic actuators allowed to operate against and by external loads is provided. To this end, the hybrid machine comprises hydraulic cylinders (7), first hydraulic pumps (P1) connected, with closed circuits, to head side pressure receiving chambers (7S) and bottom side pressure receiving chambers (7L) of the hydraulic cylinders (7), and second hydraulic pumps (P2) connected, with open circuits, to the bottom side pressure receiving chambers (7L) and an external oil chamber (10), wherein the first and second hydraulic pumps (P1, P2) are connected to electric motors (M) so as to be driven.

Abstract: An engine control device capable of improving engine efficiency by operating the engine in an area where fuel consumption is small (good) while allowing high responsivity of the engine to be maintained. The object can be achieved by operating to match at a point on a target torque line of a torque diagram and operating an electric motor when a matching point moves on the target torque line in a direction in which a load applied to the engine output shaft becomes large.

Abstract: A cylinder driving system capable of reducing the number of hydraulic devices and the amount of energy loss and an energy regenerating method thereof are provided. To this end, the system includes i) a hydraulic cylinder, ii) a hydraulic pump having three suction/discharge ports of a first port for supplying oil to a bottom chamber of the hydraulic cylinder or draining oil from the bottom chamber, a second port for draining oil from a head chamber of the hydraulic cylinder or supplying oil to the head chamber, and a third port for draining oil from a tank or supplying oil to the tank, the suction rate or the discharge rate in the first port being the sum of the respective discharge rates or suction rates in the second port and the third port, and iii) a driving source for driving the hydraulic pump.

Abstract: The present invention relates to an engine control device and aims to improve engine efficiency by operating the engine in an area where fuel consumption is small (good) and to allow keeping high responsivity of the engine. The object can be achieved by operating to match at a point on a target torque line of a torque diagram and operating an electric motor when a matching point moves on the target torque line in a direction that a load applied to the engine output shaft becomes large.

Abstract: A cylinder driving system capable of reducing the number of hydraulic devices and the amount of energy loss and an energy regenerating method thereof are provided. To this end, the system includes i) a hydraulic cylinder, ii) a hydraulic pump having three suction/discharge ports of a first port for supplying oil to a bottom chamber of the hydraulic cylinder or draining oil from the bottom chamber, a second port for draining oil from a head chamber of the hydraulic cylinder or supplying oil to the head chamber, and a third port for draining oil from a tank or supplying oil to the tank, the suction rate or the discharge rate in the first port being the sum of the respective discharge rates or suction rates in the second port and the third port, and iii) a driving source for driving the hydraulic pump.

Abstract: A hybrid machine with a hydraulic drive device having hydraulic actuators allowed to operate against and by external loads is provided. To this end, the hybrid machine comprises hydraulic cylinders (7), first hydraulic pumps (P1) connected, with closed circuits, to head side pressure receiving chambers (7S) and bottom side pressure receiving chambers (7L) of the hydraulic cylinders (7), and second hydraulic pumps (P2) connected, with open circuits, to the bottom side pressure receiving chambers (7L) and an external oil chamber (10), wherein the first and second hydraulic pumps (P1, P2) are connected to electric motors (M) so as to be driven.

Abstract: A power unit for creating discharge shock waves, which is excellent in performance, reliability, and durability is provided with: a plurality of capacitors (C1-C6), connected in series; first coils (L1, L2, L3) and switches (S1, S2, S3), which are connected to every other one of the capacitors (C1, C3, C5); first resistors (R11, R12, R13), which are connected in series with the first terminal of a power source (1); second resistors (R21, R22, R23), which are connected in series with the second terminal of the power source (1); and a discharge electrode (2), which is provided on the output side of the last capacitor (C6); wherein each switch (S1, S2, S3) has a first main electrode (a), a second main electrode (b), and a triggering electrode (c).

Abstract: An air intake apparatus for use in a spark-assisted diesel engine having a throttle valve mounted in an air intake connector connected with an air intake system of the engine, and a throttle valve actuating mechanism connected with a fuel regulating mechanism of the engine so that the throttle valve may be actuated or turned in the direction of throttling when the engine is operating at a partial load condition. The throttle valve actuating mechanism is connected through a mechanical device or the combination of the mechanical device and an electric device with the fuel regulating mechanism of the engine.

Abstract: A fuel blended with alcohol for use in a diesel engine, which comprises a petroleum fuel, methanol, and a higher alcohol having 10 to 16 carbon atoms as a mutual solvent for said petroleum fuel and methanol.

Abstract: A fuel blended with alcohol for use in a diesel engine, which comprises a petroleum fuel, ethanol, and gasoline as a mutual solvent for said petroleum fuel and ethanol.