IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0947304
(1978-09-29)
|
| 우선권정보 |
JP-0118401 (1977-09-30) |
|
발명자
/ 주소 |
- Oshima Yujiro (Ishinomiya JPX) Banno Takatoshi (Nagoya JPX)
|
| 출원인 / 주소 |
- Kabushiki Kaisha Toyota Chuo Kenkyusho (Aichi JPX 03)
|
| 인용정보 |
피인용 횟수 :
56 인용 특허 :
0 |
초록
▼
An internal combustion engine is so constructed that the timing of the intake and exhaust valves can be changed during operation of the engine making it possible to select the optimum timing for the valves in accordance with the operating conditions. The timing can be changed from the exterior of th
An internal combustion engine is so constructed that the timing of the intake and exhaust valves can be changed during operation of the engine making it possible to select the optimum timing for the valves in accordance with the operating conditions. The timing can be changed from the exterior of the engine on the basis of factors such as the quantity and nature of pollutants in the exhaust gases, the rate of revolution of the engine and the load on the engine. Adjustment can be effected either manually or automatically. The construction of the engine is such that the cam shaft or cam shafts can be replaced with cam shafts of a different design and that the cylinder head can be replaced with a head of a different design. Adjustment of the timing of the intake and exhaust valves is effected through the use of a planetary gear train which also provides the necessary reduction in the speed of the cam shaft relative to the crank shaft. The engine is suitable for operation of a practical automobile or as a research and development device.
대표청구항
▼
An internal combustion engine comprising: a cylinder block having at least one cylinder, a piston reciprocably disposed within said cylinder, a combustion chamber formed by the inner wall of said cylinder and a face of said piston, an intake valve and an exhaust valve for respectively supplying air-
An internal combustion engine comprising: a cylinder block having at least one cylinder, a piston reciprocably disposed within said cylinder, a combustion chamber formed by the inner wall of said cylinder and a face of said piston, an intake valve and an exhaust valve for respectively supplying air-fuel mixture into said combustion chamber and discharging burnt gases from said combustion chamber at predetermined timings; an intake cam shaft and an exhaust cam shaft, each shaft having a cam thereon, said shafts being driven in association with a crank shaft for opening and closing said intake valve and said exhaust valve respectively at said predetermined timings, an adjusting device including at least two individual planetary gear trains one gear train being associated with each said cam shaft, each said gear train, comprising a sun gear, planet gears, an internal gear and a carrier for rotatably supporting said planet gears and for rotating said planet gears around said sun gear along the inner pheriphery of said internal gear, a first element of said sun gear, said internal gear and said carrier of each said gear train being coupled for rotation in synchronism with said crank shaft, a second element of each said gear train providing for transmitting the rotation to said associated cam shaft, and the third element being rotatably supported, and a first and second external force-receiving means provided in association with each said third element for turning said third element relative to said first and second element by a predetermined angle and maintaining the position of said third element, thereby changing independently the rotational phase of said cam shafts with respect to said crank shaft for independently adjusting the timing at which said intake valve and said exhaust valve are brought to an open or closed position; two valve operating devices, each device comprising: a cam housing disposed in the outer periphery of said cam shaft coaxially and attached by a fixing means to the engine so as to pivotally move about the axis of said cam shaft, and an interlocking portion including a valve lifter connected to a cam on said cam shaft within said cam housing, a push rod connected to said valve lifter and reciprocably fitted in said cam housing and a rocker arm connecting said push rod and said intake valve or exhaust valve, two balance shafts disposed in equi-spaced relation from said crank shaft and each including a mounted weight, one of said two balance shafts being connected to said crank shaft through said timing chain and rotating in the same direction as that of said crank shaft, the other balance shaft rotating in the opposite direction to that of said crank shaft, an injection-adjusting device including a planetary gear train comprising a sun gear, three planet gears, an internal gear and a carrier rotatably supporting said planet gears for rotating the same around said sun gear along the inner periphery of said internal gear, said sun gear being driven in synchronism with said crank shaft through said timing shaft by said chain means, said internal gear being coupled with said injection pump shaft integrally and said carrier being rotatably supported and a second external force-receiving means for adjustment of injection timing comprising: a worm wheel integrally formed on said carrier in its outer periphery and, a worm gear engaging said worm wheel, and a link and cable connecting said device with said worm gear for turning said planet gears about said sun gear by a predetermined angle and maintaining the same fixed, and an ignition adjusting device including a planetary gear train comprising a sun gear, three planet gears, an internal gear and a carrier rotatably supporting said planet gears and rotating the same around said sun gear along the inner periphery of said internal gear, a chain means for driving said sun gear in synchronism with said crank shaft through said timing shaft, said internal gear being coupled with said ignition-adjusting device shaft integrally and said carrier being rotatably supported, and a third external force-receiving means for adjustment of ignition timing comprising: a worm wheel integrally formed on said carrier in its outer periphery.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.