发明名称 |
INTERNAL COMBUSTION ENGINE |
摘要 |
An overhead-camshaft internal combustion engine is disclosed, in which the fuel pumps are arranged to use efficiently the space within a cylinder head assembly of the engine. The cylinder head assembly includes a cylinder head block, and the engine comprises a camshaft rotatable about a camshaft axis and having a plurality of inlet and exhaust cams for actuating associated inlet and exhaust valves of the engine, and at least one fuel pump comprising a unit pump assembly driven directly by a respective pump cam provided on the camshaft. The engine further comprises a plurality of rocker arms driven by the inlet and exhaust cams and arranged to actuate the inlet and exhaust valves. Each rocker arm is pivotable about a rocker arm axis which is substantially parallel to the camshaft axis. The or each pump assembly is mounted between the rocker arm axis and the cylinder head block. |
申请公布号 |
US2015096537(A1) |
申请公布日期 |
2015.04.09 |
申请号 |
US201314403216 |
申请日期 |
2013.05.09 |
申请人 |
DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG, S.A.R.L. |
发明人 |
Graham Mark S. |
分类号 |
F01L1/053;F02M63/02 |
主分类号 |
F01L1/053 |
代理机构 |
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代理人 |
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主权项 |
1. An overhead-camshaft internal combustion engine having a cylinder head assembly including a cylinder head block; the engine comprising:
a camshaft mounted longitudinally with respect to the cylinder head assembly, the camshaft being rotatable about a camshaft axis and having a plurality of inlet and exhaust cams for actuating associated inlet and exhaust valves of the engine; at least one fuel pump comprising a unit pump assembly driven directly by a respective pump cam provided on the camshaft, the unit pump assembly being elongate to define a pump axis; and a plurality of rocker arms driven by the inlet and exhaust cams and arranged to actuate the inlet and exhaust valves, wherein each rocker arm is pivotable about a rocker arm axis which is substantially parallel to the camshaft axis; characterised in that the cylinder head block defines a mounting surface and, the or each unit pump assembly is mounted in a sleeve fixed onto said mounting surface, and wherein the or each rocker arm is mounted on a rocker shaft mounted on the sleeve so that the or each pump assembly is mounted between the rocker arm axis and the cylinder head block. |
地址 |
BASCHARAGE LU |