发明授权
- 专利标题: Fuel injection pump for internal combustion engines, in particular diesel engines
- 专利标题(中): 内燃机燃油注射泵,特别是柴油发动机
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申请号: US542808申请日: 1990-06-22
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公开(公告)号: US5072706A公开(公告)日: 1991-12-17
- 发明人: Ewald Eblen , Karl Hofmann , Alfred Schmitt , Max Straubel , Hung Truong-Canh
- 申请人: Ewald Eblen , Karl Hofmann , Alfred Schmitt , Max Straubel , Hung Truong-Canh
- 申请人地址: DEX Stuttgart
- 专利权人: Robert Bosch GmbH
- 当前专利权人: Robert Bosch GmbH
- 当前专利权人地址: DEX Stuttgart
- 优先权: DEX3634962 19861014
- 主分类号: F02B3/06
- IPC分类号: F02B3/06 ; F02M41/16 ; F02M45/04 ; F02M45/08 ; F02M63/00
摘要:
A fuel injection arrangement for internal combustion engines, particularly for diesel engines, is indicated, in which the fuel injection is divided into an advance injection and a main injection for the purpose of noise reduction. An advance injection unit (27) is provided for the purpose of proportioning the advance injection quantity and a fuel injection pump of a conventional construction is provided for proportioning the main injection quantity. For an optimal design of the advance injection quantity with respect to noise reduction without influencing the main injection quantity, the advance injection unit (27) comprises a high-pressure storage (28), which is compressed to injection pressure, and at least one solenoid valve (30), which is controlled with respect to time. The advance and main injections are preferably effected via separate nozzle cross sections (21, 22).
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