Internal combustion engine
First Claim
1. An internal combustion engine comprising:
- a transmission for transmitting power from a crankshaft to an output shaft through speed change, with the speed change in said transmission being performed by the driving of a speed change electric motor through a speed change drive mechanism,wherein power transmission control means for controlling the transmission of power from said crankshaft to said transmission is provided at one end of said crankshaft, andat least a part of said speed change electric motor and said speed change drive mechanism is disposed on an outside of said power transmission control means,wherein said speed change drive mechanism includes an idle gear shaft integrally and coaxially provided with a large diameter gear and a small diameter gear which are operative to transmit rotational power of a motor drive shaft of said speed change drive mechanism to a shift spindle through speed reduction;
said transmission includes a main shaft to which power is inputted by said power transmission control means, and a counter shaft for transmitting the rotational power of said main shaft to said output shaft; and
an arrangement of said motor drive shaft, said idle gear shaft and said shift spindle and an arrangement of said main shaft and said counter shaft are so set as to avoid an area between said crankshaft and said output shaft.
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Accused Products
Abstract
An internal combustion engine including a transmission for transmitting power from a crankshaft to an output shaft through speed change, with the speed change in the transmission being performed by the driving of a speed change electric motor through a speed change drive mechanism, wherein power transmission control means for controlling the transmission of power from the crankshaft to the transmission is provided at one end of the crankshaft, and at least a part of the speed change electric motor and the speed change drive mechanism is disposed on the outside of the power transmission control means. This configuration of the internal combustion engine is reduced in size because of the layout of the speed change drive mechanism and the speed change electric motor.
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Citations
18 Claims
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1. An internal combustion engine comprising:
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a transmission for transmitting power from a crankshaft to an output shaft through speed change, with the speed change in said transmission being performed by the driving of a speed change electric motor through a speed change drive mechanism, wherein power transmission control means for controlling the transmission of power from said crankshaft to said transmission is provided at one end of said crankshaft, and at least a part of said speed change electric motor and said speed change drive mechanism is disposed on an outside of said power transmission control means, wherein said speed change drive mechanism includes an idle gear shaft integrally and coaxially provided with a large diameter gear and a small diameter gear which are operative to transmit rotational power of a motor drive shaft of said speed change drive mechanism to a shift spindle through speed reduction; said transmission includes a main shaft to which power is inputted by said power transmission control means, and a counter shaft for transmitting the rotational power of said main shaft to said output shaft; and an arrangement of said motor drive shaft, said idle gear shaft and said shift spindle and an arrangement of said main shaft and said counter shaft are so set as to avoid an area between said crankshaft and said output shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An internal combustion engine comprising:
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a speed change drive mechanism including a speed change electric motor; and a transmission for transmitting power from a crankshaft to an output shaft through speed change, with the speed change in said transmission being performed by the driving of the speed change electric motor through the speed change drive mechanism; and power transmission control means for controlling the transmission of power from said crankshaft to said transmission, the power transmission control means being provided at one end of said crankshaft, wherein at least a part of said speed change electric motor and said speed change drive mechanism is disposed forwardly with respect to said power transmission control means, wherein said speed change drive mechanism includes an idle gear shaft integrally and coaxially provided with a large diameter gear and a small diameter gear which are operative to transmit rotational power of a motor drive shaft of said speed change drive mechanism to a shift spindle through speed reduction; said transmission includes a main shaft to which power is inputted by said power transmission control means, and a counter shaft for transmitting the rotational power of said main shaft to said output shaft; and an arrangement of said motor drive shaft, said idle gear shaft and said shift spindle and an arrangement of said main shaft and said counter shaft are so set as to avoid an area between said crankshaft and said output shaft. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An internal combustion engine comprising:
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a speed change drive mechanism; a speed change electric motor; and a transmission for transmitting power from a crankshaft to an output shaft through speed change, with the speed change in said transmission being performed by the driving of the speed change electric motor through the speed change drive mechanism; and a clutch provided at one end of said crankshaft for controlling the transmission of power from said crankshaft to said transmission, wherein at least a part of said speed change electric motor and said speed change drive mechanism is disposed forwardly with respect to said clutch, wherein said speed change drive mechanism includes an idle gear shaft integrally and coaxially provided with a large diameter gear and a small diameter gear which are operative to transmit rotational power of a motor drive shaft of said speed change drive mechanism to a shift spindle through speed reduction; said transmission includes a main shaft to which power is inputted by said clutch, and a counter shaft for transmitting the rotational power of said main shaft to said output shaft; and an arrangement of said motor drive shaft, said idle gear shaft and said shift spindle and an arrangement of said main shaft and said counter shaft are so set as to avoid an area between said crankshaft and said output shaft. - View Dependent Claims (17, 18)
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Specification