Method of controlling the process of combustion in an internal combustion engine, and engine with means for controlling the engine valves
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-075/02
F02B-047/08
출원번호
US-0830316
(2001-04-26)
우선권정보
SE-9803667 (1998-10-26)
국제출원번호
PCT/SE99/01928
(1999-10-26)
국제공개번호
WO00/28197
(2000-05-18)
발명자
/ 주소
Denbratt, Ingemar
출원인 / 주소
AB Volvo
대리인 / 주소
Young & Thompson
인용정보
피인용 횟수 :
11인용 특허 :
3
초록▼
Four-stroke internal combustion engine with electrically operated inlet and exhaust valves (9,11) and means for supplying a homogeneous fuel/air mixture to the engine cylinders (1). The valves are controlled by a control unit (15), which, within a lower rpm range, closes the exhaust valve (11) befor
Four-stroke internal combustion engine with electrically operated inlet and exhaust valves (9,11) and means for supplying a homogeneous fuel/air mixture to the engine cylinders (1). The valves are controlled by a control unit (15), which, within a lower rpm range, closes the exhaust valve (11) before the piston (4) has reached its upper dead center point. Under the effect of trapped residual gas, a temperature increase is achieved, which results in compression ignition of the fuel/air mixture. The control unit (15) controls the exhaust valve (11), so that the amount of residual gases in the cylinders at the closing of the exhaust valves is greater at low loads and high rpm than at high loads and low rpm, in order to control the ignition delay in this manner.
대표청구항▼
Four-stroke internal combustion engine with electrically operated inlet and exhaust valves (9,11) and means for supplying a homogeneous fuel/air mixture to the engine cylinders (1). The valves are controlled by a control unit (15), which, within a lower rpm range, closes the exhaust valve (11) befor
Four-stroke internal combustion engine with electrically operated inlet and exhaust valves (9,11) and means for supplying a homogeneous fuel/air mixture to the engine cylinders (1). The valves are controlled by a control unit (15), which, within a lower rpm range, closes the exhaust valve (11) before the piston (4) has reached its upper dead center point. Under the effect of trapped residual gas, a temperature increase is achieved, which results in compression ignition of the fuel/air mixture. The control unit (15) controls the exhaust valve (11), so that the amount of residual gases in the cylinders at the closing of the exhaust valves is greater at low loads and high rpm than at high loads and low rpm, in order to control the ignition delay in this manner. t front and rear journal supporting walls and second front and rear journal supporting walls, respectively, said first and second front journal supporting walls being connected by a plurality of bolts inserted from a side of the cylinder bores of one of the first and second cylinder blocks and disposed on opposite sides of and in proximity to a front journal of said plurality of journals, said first and second rear journal supporting walls being connected by a plurality of bolts inserted from a side of the cylinder bores of the other of the first and second cylinder blocks and disposed on opposite sides of and in proximity to a rear journal of said plurality of journals. 5. The crankshaft supporting structure for a horizontally opposed type internal combustion engine according to claim 1, wherein an axis of each of said plurality of first bolts passes through one of the cylinder bores of each of the first and second cylinder blocks. 6. The crankshaft supporting structure for a horizontally opposed type internal combustion engine according to claim 2, wherein an axis of each of said plurality of first bolts and each of said plurality of second bolts passes through one of the cylinder bores of each of said first and second cylinder blocks. 7. A crankshaft supporting structure for a horizontally opposed type internal combustion engine, comprising: a crankcase for containing and supporting the crankshaft, said crankcase being connectable to first and second cylinder blocks of the engine disposed on opposite sides of said crankcase and having cylinder bores for slidably receiving therein first and second pluralities of pistons of the engines respectively, said crankcase being split along a plane containing an axis of the crankshaft into first and second case halves connectable respectively with the first and second cylinder blocks; said first and second case halves being integrally provided with first and second journal supporting walls, respectively, for rotatably supporting a middle journal of said crankshaft therebetween, said first and second journal supporting walls for facing the cylinder bores of the first and second cylinder blocks; and said first and second journal supporting walls being connected by a plurality of first bolts inserted from a side of the cylinder bores of the first cylinder block and disposed on opposite sides of and in proximity to the middle journal, the plurality of first bolts opening into the cylinder bores. 8. The crankshaft supporting structure for a horizontally opposed type internal combustion engine according to claim 7, wherein said first and second journal supporting walls are connected by a plurality of second bolts inserted from a side of the cylinder bores of the second cylinder block and disposed on opposite sides of and in proximity to the middle journal. 9. The crankshaft supporting structure for a horizontally opposed type internal combustion engine according to claim 7, wherein said first and second case halves are integrally provided with first front and rear journal supporting walls and second front and rear journal supporting walls, respectively, said first and second front journal supporting walls being connected by a plurality of bolts inserted from a side of the cylinder bores of one of the first and second cylinder blocks and disposed on opposite sides of and in proximity to a front journal of the plurality of journals, said first and second rear journal supporting walls being connected by a plurality of bolts inserted from a side of the cylinder bores of the other of the first and second cylinder blocks and disposed on opposite sides of and in proximity to a rear journal of the plurality of journals. 10. The crankshaft supporting structure for a horizontally opposed type internal combustion engine according to claim 8, wherein said first and second case halves are integrally provided with first front and rear journal supporting walls and second front and rear journal supp
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이 특허에 인용된 특허 (3)
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Wang, Junmin; Chadwell, Christopher J., Apparatus and method for controlling transient operation of an engine operating in a homogeneous charge compression ignition combustion mode.
Karrelmeyer, Roland; Sauer, Christina; Fischer, Wolfgang; Casal Kulzer, Andre F.; Haering, Juergen, Procedure for the operation of an internal combustion engine.
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