摘要:
A belt tension control device is mounted on a hybrid vehicle that is provided with an engine, a motor, a belt transmitting power between the engine and the motor, and tension changing means capable of changing tension applied to the belt. The belt tension control device is provided with control means for estimating a combustion torque relating to ignition start-up or a motor torque relating to the motor which is required to start the engine before the engine start-up and controlling the tension changing means to change the tension applied to the belt, based on the estimated motor torque before the engine is started, according to the estimated combustion torque so that torque to be transmitted to the engine from the motor is transmitted via the belt.
摘要:
[Subject] A low-cost and brief method to detect an airtight failure in a working-gas circulating type gas engine with sufficient accuracy and a working-gas circulating type gas engine using the method should be provided. [Means for Solution] In a working-gas circulating type gas engine, an extra predetermined quantity 1 of at least one of fuel gas, oxidizer gas, and working gas is supplied as surplus gas into a circulation passage. Based on the difference between this predetermined quantity 1 and increment of this predetermined quantity 1 and the increment of the quantity of the gas in the circulation passage separately detected by a gas quantity detecting means, the existence of an airtight failure in the engine is judged.
摘要:
A gas circulation engine includes: a combustion chamber (CC) to which high-pressure fuel in a first high-pressure fuel supply passage (43), an oxidant and working gas are supplied; a circulation path (20) that connects an intake-side portion and an exhaust-side portion of the combustion chamber (CC) to each other; a fuel bleed-off tank (81) into which the high-pressure fuel in the first high-pressure fuel supply passage (43) is bled off; a fuel bleed-off valve (83) that permits or shuts off communication between the first high-pressure fuel supply passage (43) and the fuel bleed-off tank (81); and a fuel bleed-off control unit (50) that permits communication between the first high-pressure fuel supply passage (43) and the fuel bleed-off tank (81) by opening the fuel bleed-off valve (83) when the engine is stopped, the communication between the first high-pressure fuel supply passage (43) and the fuel bleed-off tank (81) being shut off during operation of the engine.
摘要:
A working gas circulation engine includes a combustion chamber (10a) 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 (20) that can allow the working gas to circulate from a suction side to an exhaust side of the combustion chamber (10a) and can supply the same again to the combustion chamber (10a); a feed means (100) that can feed the gas in a pressure-reduction target section (2), which is the section whose pressure is to be reduced, to the outside, and a control means (53) that operates the feed means (100) for feeding the gas in the pressure-reduction target section (2), when the pressure in the pressure-reduction target section (2) is higher than a predetermined pressure that is set in advance.
摘要:
It is an object of the present invention to improve the mixability of liquid hydrocarbon fuel and hydrogen gas and reduce the number of parts required for fuel supply means that supplies the two types of fuel. Disclosed is a hydrogen-fueled internal combustion engine (1) that uses liquid hydrocarbon fuel and hydrogen gas as fuel. The hydrogen-fueled internal combustion engine comprises a fuel injection device (12) for injecting hydrocarbon fuel; fuel supply means for supplying hydrocarbon fuel to the fuel injection device; and a microbubble generation device (16) for generating microbubbles of hydrogen gas and mixing the generated microbubbles of hydrogen gas into liquid hydrocarbon fuel in the fuel supply means. The hydrogen gas microbubbles are supplied, for instance, to a fuel supply path (second fuel supply path) and fuel tank, which constitute the fuel supply means.
摘要:
The stop-start control apparatus (20) is applied to the spark ignition type internal combustion engine (1), stops the internal combustion engine 1 in a case that a prescribed stop condition is fulfilled, and restarts the internal combustion engine (1) in a case that a prescribed restart condition is fulfilled. The control apparatus cuts spark ignition for the internal combustion engine 1 in response to the fulfillment of the stop condition, and carries on fuel supply to the internal combustion engine (1). When a restart condition is fulfilled after the fulfillment of a stop condition and prior to a complete stop of the internal combustion engine (1), the control apparatus restarts the internal combustion engine (1) by resuming spark ignition for the internal combustion engine (1) in order that fuel supplied after the fulfillment of the stop condition burns.
摘要:
In consideration of an amplification effect of a braking force at the time of brake operation, upper-limits (α, β) of a brake operation force (Brk) with which the execution of free-run coasting and neutral coasting is started may be different, on the basis of whether or not a brake booster can be filled with a negative pressure. Therefore, while the braking force at the time of brake operation is secured, the range of the brake operation force (Brk) with which coasting is executed can be enlarged, and an improvement in fuel economy can be made.
摘要:
In consideration of an amplification effect of a braking force at the time of brake operation, upper-limits (α, β) of a brake operation force (Brk) with which the execution of free-run coasting and neutral coasting is started may be different, on the basis of whether or not a brake booster can be filled with a negative pressure. Therefore, while the braking force at the time of brake operation is secured, the range of the brake operation force (Brk) with which coasting is executed can be enlarged, and an improvement in fuel economy can be made.