Engine assembly including crankshaft for V8 arrangement
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F02B-075/32
F02B-075/22
F16C-003/20
F02B-075/18
출원번호
US-0030581
(2011-02-18)
등록번호
US-9316151
(2016-04-19)
발명자
/ 주소
Keating, Edward J.
McAlpine, Robert S.
Zahdeh, Akram R.
Orban, Hatem Zakaria
출원인 / 주소
GM GLOBAL TECHNOLOGY OPERATIONS LLC
대리인 / 주소
Harness, Dickey & Pierce, P.L.C.
인용정보
피인용 횟수 :
0인용 특허 :
8
초록▼
A crankshaft for a V8 engine includes first, second, third, fourth, fifth, sixth, seventh and eighth crank pins defined on the crankshaft. The second crank pin is rotationally offset from the first crank pin, the third crank pin is rotationally offset from the first and second crank pins, the fourth
A crankshaft for a V8 engine includes first, second, third, fourth, fifth, sixth, seventh and eighth crank pins defined on the crankshaft. The second crank pin is rotationally offset from the first crank pin, the third crank pin is rotationally offset from the first and second crank pins, the fourth crank pin is rotationally offset from the first, second and third crank pins, the fifth crank pin is rotationally offset from the first, second, third and fourth crank pins, and the sixth pin is rotationally offset from the first, second, third, fourth and fifth crank pins. The seventh crank pin is rotationally aligned with the first crank pin and the eighth crank pin is rotationally aligned with the second crank pin.
대표청구항▼
1. A V8 engine crankshaft comprising: a first crank pin defined on the crankshaft;a second crank pin defined on the crankshaft and rotationally offset from the first crank pin;a third crank pin defined on the crankshaft and rotationally offset from the first and second crank pins;a fourth crank pin
1. A V8 engine crankshaft comprising: a first crank pin defined on the crankshaft;a second crank pin defined on the crankshaft and rotationally offset from the first crank pin;a third crank pin defined on the crankshaft and rotationally offset from the first and second crank pins;a fourth crank pin defined on the crankshaft and rotationally offset from the first, second and third crank pins;a fifth crank pin defined on the crankshaft and rotationally offset from the first, second, third and fourth crank pins;a sixth crank pin defined on the crankshaft and rotationally offset from the first, second, third, fourth and fifth crank pins;a seventh crank pin defined on the crankshaft and rotationally aligned with the first crank pin; andan eighth crank pin defined on the crankshaft and rotationally aligned with the second crank pin. 2. The V8 engine crankshaft of claim 1, wherein the second crank pin is rotationally offset from the first crank pin in a rotational direction of the crankshaft by a first angle, the third crank pin is rotationally offset from the second crank pin in the rotational direction by the first angle, the fourth crank pin is rotationally offset from the third crank pin in the rotational direction by the first angle, the fifth crank pin is rotationally offset from the fourth crank pin in the rotational direction by the first angle and the sixth crank pin is rotationally offset from the fifth crank pin in the rotational direction by the first angle. 3. The V8 engine crankshaft of claim 2, wherein the first angle is equal to a bank angle defined between a first bank of cylinders and a second bank of cylinders defined in a V8 engine block housing the crankshaft. 4. The V8 engine crankshaft of claim 2, wherein the first angle is 60 degrees. 5. The V8 engine crankshaft of claim 1, wherein the first crank pin is located at a first axial end of the crankshaft and the eighth crank pin is located at a second axial end of the crankshaft with the second crank pin located axially between the first and eighth crank pins, the third crank pin located axially between the second and eighth crank pins, the fourth crank pin located axially between the third and eighth crank pins, the fifth crank pin located axially between the fourth and eighth crank pins, the sixth crank pin located axially between the fifth and eighth crank pins, and the seventh crank pin located axially between the sixth and eighth crank pins. 6. The V8 engine crankshaft of claim 5, wherein the second crank pin is rotationally offset from the first crank pin in a rotational direction of the crankshaft by 60 degrees, the third crank pin is rotationally offset from the second crank pin in the rotational direction by 60 degrees, the fourth crank pin is rotationally offset from the third crank pin in the rotational direction by 60 degrees, the fifth crank pin is rotationally offset from the fourth crank pin in the rotational direction by 60 degrees and the sixth crank pin is rotationally offset from the fifth crank pin in the rotational direction by 60 degrees. 7. The V8 engine crankshaft of claim 6, wherein the first, third, fifth and seventh crank pins are each engaged with a piston located in a first bank of cylinders defined in a V8 engine block housing the crankshaft and the second, fourth, sixth and eighth crank pins are each engaged with a piston located in a second bank of cylinders defined in the V8 engine block extending at an angle of 60 degrees relative to the first bank of cylinders. 8. An engine assembly comprising: an engine structure including an engine block defining a first bank of cylinders including four cylinders and a second bank of cylinders including four cylinders forming a V8 arrangement; anda crankshaft rotationally supported on the engine structure and including a first crank pin, a second crank pin rotationally offset from the first crank pin, a third crank pin rotationally offset from the first and second crank pins, a fourth crank pin rotationally offset from the first, second and third crank pins, a fifth crank pin rotationally offset from the first, second, third and fourth crank pins, a sixth crank pin rotationally offset from the first, second, third, fourth and fifth crank pins, a seventh crank pin rotationally aligned with the first crank pin, and an eighth crank pin rotationally aligned with the second crank pin. 9. The engine assembly of claim 8, wherein the second crank pin is rotationally offset from the first crank pin in a rotational direction of the crankshaft by a first angle, the third crank pin is rotationally offset from the second crank pin in the rotational direction by the first angle, the fourth crank pin is rotationally offset from the third crank pin in the rotational direction by the first angle, the fifth crank pin is rotationally offset from the fourth crank pin in the rotational direction by the first angle and the sixth crank pin is rotationally offset from the fifth crank pin in the rotational direction by the first angle. 10. The engine assembly of claim 9, wherein the first angle is equal to a bank angle defined between the first bank of cylinders and the second bank of cylinders. 11. The engine assembly of claim 9, wherein the first angle is 60 degrees. 12. The engine assembly of claim 8, wherein the first crank pin is located at a first axial end of the crankshaft and the eighth crank pin is located at a second axial end of the crankshaft with the second crank pin located axially between the first and eighth crank pins, the third crank pin located axially between the second and eighth crank pins, the fourth crank pin located axially between the third and eighth crank pins, the fifth crank pin located axially between the fourth and eighth crank pins, the sixth crank pin located axially between the fifth and eighth crank pins, and the seventh crank pin located axially between the sixth and eighth crank pins. 13. The engine assembly of claim 12, wherein the second crank pin is rotationally offset from the first crank pin in a rotational direction of the crankshaft by 60 degrees, the third crank pin is rotationally offset from the second crank pin in the rotational direction by 60 degrees, the fourth crank pin is rotationally offset from the third crank pin in the rotational direction by 60 degrees, the fifth crank pin is rotationally offset from the fourth crank pin in the rotational direction by 60 degrees and the sixth crank pin is rotationally offset from the fifth crank pin in the rotational direction by 60 degrees. 14. The engine assembly of claim 12, further comprising a first piston coupled to the first crank pin, a second piston coupled to the second crank pin, a third piston coupled to the third crank pin, a fourth piston coupled to the fourth crank pin, a fifth piston coupled to the fifth crank pin, a sixth piston coupled to the sixth crank pin, a seventh piston coupled to the seventh crank pin, and an eighth piston coupled to the eighth crank pin, the first, third, fifth and seventh pistons each being located in a cylinder defined in the first bank of cylinders and the second, fourth, sixth and eighth pistons each being located in a cylinder defined in the second bank of cylinders, the second bank of cylinders extending at an angle of 60 degrees relative to the first bank of cylinders. 15. The engine assembly of claim 8, further comprising a first piston coupled to the first crank pin and located in a first cylinder defined in the first bank of cylinders, a second piston coupled to the second crank pin and located in a second cylinder defined in the second bank of cylinders, a third piston coupled to the third crank pin and located in a third cylinder defined in the first bank of cylinders, a fourth piston coupled to the fourth crank pin and located in a fourth cylinder defined in the second bank of cylinders, a fifth piston coupled to the fifth crank pin and located in a fifth cylinder defined in the first bank of cylinders, a sixth piston coupled to the sixth crank pin and located in a sixth cylinder defined in the second bank of cylinders, a seventh piston coupled to the seventh crank pin and located in a seventh cylinder defined in the first bank of cylinders, and an eighth piston coupled to the eighth crank pin and located in an eighth cylinder defined in the second bank of cylinders, the engine assembly defining a firing order including the second cylinder and the third cylinder having a combustion event at the same time and the sixth cylinder and the seventh cylinder having a combustion event at the same time. 16. The engine assembly of claim 15, wherein the engine structure defines a first port in communication with one of the second and third cylinders, a first valve located within the first port, a first valve lift mechanism engaged with the first valve and a first cam lobe engaged with the first valve lift mechanism, the first valve lift mechanism being operable in a first mode and a second mode, the first mode including the first valve being displaced to an open position when the first valve lift mechanism is engaged by a peak of the first cam lobe and the second mode including the first valve remaining in a closed position when the first valve lift mechanism is engaged by the peak of the first cam lobe, the engine assembly defines a first firing interval when the first valve lift mechanism is operated in the first mode and a second firing interval equal to the first firing interval when the first valve lift mechanism is operated in the second mode. 17. The engine assembly of claim 16, wherein the engine structure defines a second port in communication with one of the sixth and seventh cylinders, a second valve located within the second port, a second valve lift mechanism engaged with the second valve and a second cam lobe engaged with the second valve lift mechanism, the second valve lift mechanism being operable in the first mode and the second mode, the first mode including the second valve being displaced to an open position when the second valve lift mechanism is engaged by a peak of the second cam lobe and the second mode including the second valve remaining in a closed position when the second valve lift mechanism is engaged by the peak of the second cam lobe, the engine assembly defining the first firing interval when the first and second valve lift mechanisms are operated in the first mode and the second firing interval equal to the first firing interval when the first and second valve lift mechanisms are operated in the second mode. 18. The engine assembly of claim 17, wherein the first firing interval and the second firing interval each include a combustion event every 120 degrees of rotation of the crankshaft.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (8)
Ito Eiji (Nagoya JPX), Crankshaft for a 90 degree V-type eight-cylinder internal combustion engine.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.