发明名称 |
Pre-injection apparatus for internal combustion engines |
摘要 |
In a pre-injection apparatus for Diesel engines, a pre-injection slide that generates a pronounced pressure intensification for the pre-injection in a pressure chamber closed off with respect to the high-pressure side and open toward the injection line is slidably supported in a stepped guide bore and is exposed to the injection pressure of a high-pressure pump. After the execution of a partial stroke (hv), which is responsible for the pre-injection quantity, the pre-injection pressure chamber is opened with a backwards-oriented action toward the high-pressure side and thereby is intially relieved of pressure. The ensuing movement of the pre-injection slide until the complete end of its stroke forms a predeterminable capacity that enables an injection pause. The pre-injection pressure chamber communicates with an electrically triggerable magnetic valve with the low-pressure side or the high-pressure side, so that the shutoff of the pre-injection is possible under certain operating conditions.
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申请公布号 |
US4745898(A) |
申请公布日期 |
1988.05.24 |
申请号 |
US19870091138 |
申请日期 |
1987.08.31 |
申请人 |
ROBERT BOSCH GMBH |
发明人 |
EGLER, WALTER;RODRIQUEZ-AMAYA, NESTOR |
分类号 |
F02M45/04;F02B3/06;F02M45/06;F02M45/08;(IPC1-7):F02M39/00 |
主分类号 |
F02M45/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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