Abstract:
A hybrid vehicle is provided in which, since the driving force of a generator/motor (M1) is transmitted to the downstream side of an output shaft (17) of a transmission (T) without going through an input shaft (16) thereof and the output shaft (17), it is possible to carry out the so-called leg shaft drive, which prevents the driving force of the generator/motor (M1) from dragging along an engine (E), the input shaft (16), and the output shaft (17), thus reducing power consumption and enhancing energy recovery efficiency during regenerative braking. Furthermore, since the generator/motor (M1) is disposed at a position sandwiched between the engine (E) and the transmission (T), it is possible to employ the same layout for the generator/motor (M1) as for a conventional sandwiched generator/motor type, and the leg shaft drive system can be employed without greatly modifying the design of the transmission (T).
Abstract:
An angle of spray of a fuel injection valve is narrowed when a temperature of an internal combustion engine is low, whereas the angle of spray of the fuel injection valve is widened in a low and intermediate load region where the temperature of the internal combustion engine is high. The angle of spray of the fuel injection valve is narrowed and also a spray condition is controlled so that the fuel spray comes unevenly in contact with an exhaust side portion of a valve head of an intake valve, in a high load region where the temperature of the internal combustion engine is high.
Abstract:
An angle of spray of a fuel injection valve is narrowed when a temperature of an internal combustion engine is low, whereas the angle of spray of the fuel injection valve is widened in a low and intermediate load region where the temperature of the internal combustion engine is high. The angle of spray of the fuel injection valve is narrowed and also a spray condition is controlled so that the fuel spray comes unevenly in contact with an exhaust side portion of a valve head of an intake valve, in a high load region where the temperature of the internal combustion engine is high.
Abstract:
An input protection circuit for an electronic circuit includes a switching circuit operable between an ON state and an OFF state for generating an input for the electronic circuit, a first circuit responsive to an excess level of input for forming a clamping circuit across a first resistor for shunting an excess level input, a second circuit monitoring an input from the switching means for detecting a state of the switching circuit for producing an ON/OFF signal depending upon the detected state of the switching circuit, the second circuit including a second resistor which forms a series circuit with the first resistor and the switching circuits while the switching circuits is in an ON state. The switching circuits is operated to an ON position for establishing the series circuit for setting the level of the input at a minimum level and to an OFF position for opening the series circuit for setting the level of the input at a maximum level. The second circuit is set at a threshold level to be compared with the input level for detecting the state of the switching circuit, the threshold level being set at a level higher than the minimum level and lower than the maximum level so as to assure detection of the state of the switching circuits.
Abstract:
A power plant which is capable of improving the drive efficiency and the power generation efficiency thereof when the electric power is generated using the power of a driven part thereof. A power plant has an internal combustion engine having a crankshaft, and a rotary motor having a rotor. A planetary gear train includes a sun gear, a ring gear, and a carrier rotatably supporting a planetary gear in mesh with the sun gear and the ring gear. The sun gear and the ring gear are connected to drive wheels. The carrier is connected to the crankshaft. The rotor is connected between one of the sun gear and the ring gear and the drive wheels. A transmission is connected between the other of the gears and the drive wheels, for varying a speed of power of the engine and transmitting the power to the drive wheels.
Abstract:
A power plant which is capable of reducing the size and costs thereof and attaining high driving efficiency. In the power plant 1, the ratio between the number of first armature magnetic poles that form a first rotating magnetic field generated by a first stator 23 of a first rotating machine 21, the number of first magnetic poles 24a of a first rotor 24, and the number of first soft magnetic material elements 25a of a second rotor 25 disposed between the two 23 and 24 is set to 1:m:(1+m)/2 (m≠1.0), and the ratio between the number of second armature magnetic poles that form a second rotating magnetic field generated by a second stator 33 of a second rotating machine 31, the number of second magnetic poles 34a of a third rotor 34, and the number of second soft magnetic material elements 35a of a fourth rotor 35 disposed between the two 33 and 34 is set to 1:n:(1+n)/2 (n≠1.0). The two stators 23 and 33 are connected to each other. The first and fourth rotors 24 and 35 are connected to driven parts DW and DW, and the second and third rotors 25 and 34 are connected to an output portion 3a of a heat engine 3.
Abstract:
A power unit includes: a differential gear (21) in which a first rotating element (21r) is connected to an output shaft of a prime mover (2), a second rotating element (21s) is connected to a body of rotation of a rotary actuator (3), and a third rotating element (21c) is connected to a driven unit (4) via a first power transmission path (22); a first power transmission system (34, 36, 37) selectively operable between an operating state for enabling power transmission in the first power transmission path (22) and an operating state for disconnecting the power transmission; a second power transmission path (23) connecting between the output shaft of the prime mover (2) and the driven unit (4); and a second power transmission system (32) selectively operable between an operating state for enabling power transmission in the second power transmission path and an operating state for disconnecting the power transmission, wherein an auxiliary device (5) is connected to one of the second rotating element (21s) and the third rotating element (21c) of the differential gear (21).
Abstract:
A motor system comprises a motor (3), wherein the ratio of the number of armature magnetic poles of a stator (53), the number of magnetic poles of a first rotor (51), and the number of cores of a second rotor (52) is set to 1:m:(1+m)/2, and en ECU (60) that generates a d-axis voltage command value (Vd—c) and a q-axis voltage command (Vq—c) according to a torque command value (Tr_c), and corrects the voltage command values so as to generate a magnetic field weakening current which reduces the magnetic flex of the magnetic poles of the first rotor when the magnitude of the vector sum of the voltage command values is greater than an upper voltage limit (Vulmt) set according to an output voltage (Vo) of a battery (11).
Abstract:
To provide a magnetic machine capable of reducing the ripple and cogging of torque or thrust. An electric motor 1 includes three stators 6 to 8 each having an armature row, a rotor 3 having a permanent magnet row, and a rotor 10 having a soft magnetic material row. The respective phases in electrical angle between magnetic poles generated at respective armatures 6a to 8a of the armature row and the magnetic poles of the permanent magnet row are set to be each displaced in a predetermined direction by an electrical angle of 2π/3, and the respective phases in electrical angle between the magnetic poles generated at the respective armatures 6a to 8a of the armature row and soft magnetic material cores 11b to 13b of the soft magnetic material row are set to be each displaced in the predetermined direction by an electrical angle of π/3.
Abstract:
There is provided a power output system 1 comprising an internal combustion engine 6, an electric motor 2 and a transmission 20 including two transmission shafts 11, 16 which are connected to the internal combustion engine 6. The electric motor 2 includes a stator 3, a primary rotor 4 and a secondary rotor 5. The primary rotor 4 is connected to either of the two transmission shafts 11, 16. The secondary rotor 5 is connected to drive shafts 9, 9. And, the other transmission shaft of the two transmission shafts 11, 16 transmits power to the drive shafts 9, 9 without involving the electric motor 2.