摘要:
A variable capacity wobble plate type compressor with a variable angle non-rotary wobble plate, having a suction chamber for refrigerant gas before compression, a discharge chamber for a refrigerant gas after compression, a crankcase defining a crank chamber to receive therein a drive and a wobble plate mechanism mounted about a drive shaft connectable to a drive source, i.e., a car engine, operatively connected to compressing pistons reciprocatorily movable in cylinder bores to cause compressing motions and capable of changing the wobble angle thereof in response to a difference between pressures in the crank and the suction chambers, a gas supply passageway providing a communication between the discharge chamber and the crank chamber, a gas evacuation passageway providing a communication between the crank chamber and the suction chamber, a capacity regulating valve arranged in the gas supply passageway to regulate an opening and closing of the communication between the discharge and the crank chambers in response to a change in one of pressures in the crank chamber, the suction chamber, and the discharge chamber with respect to a given set pressure value, and an external control unit capable of changing the given set pressure value in response to an externally applied signal.
摘要:
A variable displacement wobble plate type compressor with a variable angle non-rotary wobble plate, having a suction chamber for a refrigerant before compression, a discharge chamber for a compressed refrigerant, suction and compression discharge cylinder bores, pistons reciprocated by the wobble plate within the cylinder bores for compressing the refrigerant, a crankcase with a crank chamber to receive therein a drive and a wobble plate mechanism mounted about a drive shaft connectable to a rotary drive source, i.e., a vehicle engine, connected to the pistons to cause reciprocating motion of the pistons and capable of changing the wobble angle thereof, a first communication passageway providing a fluid communication between the crankcase chamber and the discharge chamber, a first control valve for closing and opening the first passageway in response to a change in a suction pressure of the refrigerant, a second communication passageway for permitting evacuation of a blowby gas from the crankcase chamber to the suction chamber, and a second control valve changing an extent of opening of the second communication passageway in response to an increase in a fluid pressure within the crankcase chamber.
摘要:
A variable displacement wobble plate type compressor with a variable angle non-rotary wobble plate, having a suction chamber for refrigerant before compression, a discharge chamber for refrigerant after compression, suction and discharge cylinder bores, pistons reciprocating in the cylinder bores, a crankcase receiving therein a drive and a wobble plate mechanism mounted about a drive shaft connectable to a rotary drive source, i.e., a vehicle engine, connected to the pistons to cause reciprocating motion of the pistons and capable of changing the wobble angle thereof, a first passageway for communicating the crankcase interior chamber with the discharge chamber, a control valve unit for closing and opening the first passageway, a second passageway for constantly communicating the crankcase interior chamber with the suction chamber to enable a constant extraction of the refrigerant from the crankcase interior chamber into the suction chamber, and a third passageway providing an additional fluid communication between the crankcase interior chamber and the suction chamber in accordance with a decrease in the wobbling angle of the drive and wobble plates, thereby permitting an additional extraction of the refrigerant gas from the crankcase interior chamber into the suction chamber when the compressor is in a small displacement operation.
摘要:
A vehicle control system includes a determiner configured to determine whether or not a driver has performed a predetermined acceleration or deceleration operation; a detector configured to detect a value of at least one of a relative rotational position and relative rotational speed of an input shaft and an output shaft, the input shaft being positioned upstream of an engagement portion of driving power transmission members which are engaged with each other with a slack on a driving power transmission path, and the output shaft being positioned downstream of the engagement portion, and a controller configured to execute control for accelerating or decelerating the input shaft or the output shaft to reduce at least one of a contact speed and transmission torque of the driving power transmission members based on the value detected by the detector, if the determiner determines that the driver has performed the acceleration or deceleration operation.
摘要:
A method of estimating an air-intake amount of an internal combustion engine is provided. The method may comprise detecting a fluid energy amount in an interior of an air-intake passage at first and second points in time while an intake valve is closed from a compression stroke to an exhaust stroke, and calculating a predicted air-intake amount using the values of the fluid energy amounts at the first and second points with reference to an air-intake amount calculation map showing a correlation between the values of the fluid energy amounts at the first and second points and the predicted air-intake amount in the intake stroke, the air-intake amount calculation map being pre-created by finding the values of the fluid energy amounts in the air-intake passage at the first and second points and the air-intake amount, for plural running states of the internal combustion engine.
摘要:
A variable displacement compressor has a crank chamber defined in a housing. A drive shaft is arranged in the housing. A piston is accommodated in the cylinder bore. A swash plate is connected to the piston to convert a rotation of the drive shaft. A retainer surface is arranged in the housing and extends substantially perpendicular to the axis of the drive shaft. A restricting mechanism is arranged between the swash plate and the retainer surface. The restricting mechanism receives the swash plate and restricts movement of the swash plate when the inclination of the swash plate decreases.
摘要:
To make it possible to provide high quality heating or warming with low environmental pollution for a low environmental pollution vehicle such as an electric vehicle or a hybrid vehicle, an automotive air-conditioning apparatus has a hot water circuit that includes a hot water heater (heat source unit), a hot water circulating pump and a heater core to thereby perform a heating operation for heating passenger compartment air wherein, an electric motor is excited under the condition that the rotation thereof is fixed to thereby generate heat in the electric motor. The generated heat is utilized as a heat source for the hot water heater. The restricting mechanism may include two electric motors which are rotated in opposite directions to each other or a lock mechanism. Also, a cooling operation for cooling the passenger compartment air may be performed by driving the compressor (heat source unit) with the electric motors, a dehumidifying operation may be performed by simultaneously effecting the heating and cooling operations, or a heat pump type heating operation may be performed by having the refrigerant circuit acting reversibly.
摘要:
A power transmission mechanism having a pulley rotor and a release plate. The pulley rotor is coaxial with the release plate, and power from the pulley rotor is transmitted to the release plate to rotate the pulley rotor and the release plate in the same direction. A spiral spring is located between the pulley rotor and the release plate. The spiral spring is releasably engaged with the pulley rotor. A transmission surface is provided on the pulley rotor to oppose and engage a free end of the spiral spring. The transmission surface transfers power from the pulley rotor to the release plate, and relative rotation between the pulley rotor and the release plate is permitted due to deformation of the spiral spring. A release projection causes the free end of the spiral spring to move and separate from the transmission surface in accordance with relative rotation between the pulley rotor and the release plate when the load applied to the release plate exceeds a predetermined value. Therefore, if the release plate applies an unusually strong load to the pulley rotor, it will be released from the pulley rotor.
摘要:
An improved displacement control valve incorporated in a variable displacement compressor. The control valve is installed in an accommodating hole formed in a rear housing of the compressor. A cap is attached to a housing body of the control valve. A pressure sensing chamber is defined between the cap and the housing body. A pressure sensing member, or bellows, is located in the pressure sensing chamber. The bellows moves a valve body in accordance with pressure introduced into the pressure sensing chamber. A tubular protector, which is made of an elastic material, is attached to the cap. The control valve is installed in the rear housing by inserting the valve, cap first, into the accommodating hole. During this installation, the protector prevents the cap from directly contacting the housing or inner wall of the accommodating hole. The cap is therefore not deformed. The performance of the control valve is therefore improved.