发明名称 |
ENGINE HAVING VARIABLE VALVE TIMING DEVICE |
摘要 |
An engine having a variable valve timing device may include a camshaft having a cam that lifts a valve, a valve body with one side fixed with the camshaft and the other side fixed with a fixed housing, variable wings protruding on an outer circumferential surface of the fixed housing, a sprocket housing forming a delay chamber and an advance chamber with the variable wings and having a sprocket on an outer circumferential surface, a control spool disposed coaxially with the camshaft and inserted in the valve body to selectively supply hydraulic pressure from an outside to the delay chamber or the advance chamber, and an actuator fastened to an outer end of the control spool, with a side fixed to a side of the engine, and advancing or delaying the sprocket housing with respect to the valve body by adjusting the hydraulic pressure supplied to the advance chamber or the delay chamber through the control spool by pulling or pushing the control spool. |
申请公布号 |
US2015144083(A1) |
申请公布日期 |
2015.05.28 |
申请号 |
US201414338177 |
申请日期 |
2014.07.22 |
申请人 |
Hyundai Motor Company ;Kia Motors Corporation |
发明人 |
OH Chung Han |
分类号 |
F01L1/344 |
主分类号 |
F01L1/344 |
代理机构 |
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代理人 |
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主权项 |
1. An engine having a variable valve timing device, comprising:
a camshaft having a cam that lifts a valve; a valve body with one side fixed with the camshaft and the other side fixed with a fixed housing; variable wings protruding on an outer circumferential surface of the fixed housing; a sprocket housing forming a delay chamber and an advance chamber with the variable wings and having a sprocket on an outer circumferential surface; a control spool disposed coaxially with the camshaft and inserted in the valve body to selectively supply hydraulic pressure from an outside to the delay chamber or the advance chamber; and an actuator fastened to an outer end of the control spool, with a side fixed to a side of the engine, and advancing or delaying the sprocket housing with respect to the valve body by adjusting the hydraulic pressure supplied to the advance chamber or the delay chamber through the control spool by pulling or pushing the control spool. |
地址 |
Seoul KR |