JPS59165567U

JPS59165567U - diesel engine fuel injection pump

Info

Publication number: JPS59165567U
Application number: JP6014883U
Authority: JP
Inventors: 利明田中; 中島　泰夫; 杉原　邦彦; 江藤　幸寛
Original assignee: 日産自動車株式会社
Priority date: 1983-04-21
Filing date: 1983-04-21
Publication date: 1984-11-06

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来例の断面図、第２図は本考案の第１実施例
を示す断面図、第３図はカムリングの拡大断面図、第４
図、第５図はそれぞれ第３図のＡ−Ａ断面図、Ｂ−Ｂ断
面図、第６図は２つの内周カム面のそれぞれのカムリフ
ト特性図、第７図は２つの内周カム面による合成カムリ
フト、合成噴射圧、合成噴射率をそれぞれ示す特性図で
ある。２５・・・トランスファーポンプ、２６・・・ロータ部
、３５．３７・・・プランジャポンプ、４２・・・カム
リング、４３．４４・・・内周カム面、４３Ａ、４４Ａ
・・・リブト部。 μ彼しＡＢ第４図９Fig. 1 is a sectional view of the conventional example, Fig. 2 is a sectional view showing the first embodiment of the present invention, Fig. 3 is an enlarged sectional view of the cam ring, and Fig. 4 is a sectional view of the cam ring.
Figure 5 is a sectional view taken along line AA and line BB in Figure 3, Figure 6 is a cam lift characteristic diagram of each of the two inner cam surfaces, and Figure 7 is a sectional view of the two inner cam surfaces. FIG. 3 is a characteristic diagram showing a synthetic cam lift, a synthetic injection pressure, and a synthetic injection rate, respectively. 25...Transfer pump, 26...Rotor part, 35.37...Plunger pump, 42...Cam ring, 43.44...Inner circumference cam surface, 43A, 44A
...Ribbuto part. μ Himashi AB Figure 4 9

Claims

[Scope of utility model registration request]

A transfer pump that rotates synchronously with the engine is installed,
An annular cam link is arranged on the outer periphery of the loader part which also rotates, and a plunger pump is formed which reciprocates in the radial direction of the rotor part along the inner peripheral cam surface of the cam ring as the rotor part rotates. In a fuel injection pump for a diesel engine, the sucked fuel is pressurized by this plunger pump and distributed under pressure to each cylinder. A fuel injection pump for a diesel engine, characterized in that a plurality of inner circumferential cam surfaces are formed in parallel on a single cam ring, and the maximum lift portions of the inner circumferential cam surfaces have a phase difference.