JPS60131638U

JPS60131638U - Fuel injection pump advance angle control device

Info

Publication number: JPS60131638U
Application number: JP1666284U
Authority: JP
Inventors: 俊夫藤村
Original assignee: トヨタ自動車株式会社
Priority date: 1984-02-10
Filing date: 1984-02-10
Publication date: 1985-09-03

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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る進角制御装置を組み込
んだ分配型燃料噴射ポンプの断面図、第２図は第１図の
燃料噴射ポンプのうち進角制御装置部分の拡大断面図、
第３図は従来のタイマスプリング支持構造の断面図、第
４図は第２図の装置のタイマスプリング支持構造の断面
図、第５図はポンプ回転数とタイマ進角量との関係で示
した一般の進角特性図、−第６図は燃料温度とタイマス
プリングセット荷重との関係図、第７図はポンプ回転数
とタイマ進角量との関係で示した本考案装置の進角特性
線図、である。３・・・・・・タイマ、４・・・・・・タイマハウジン
グ、４ａ・・・・・・タイマケース、５・・・・・・タ
イマピストン、６・・・・・・タイマスプリング、９・
・・・・・ワッシャ、１０・・・・・・感熱膨張装置、
１３・・・・・・ワックス。Fig. 1 is a sectional view of a distribution type fuel injection pump incorporating an advance angle control device according to an embodiment of the present invention, and Fig. 2 is an enlarged sectional view of the advance angle control device portion of the fuel injection pump of Fig. 1. ,
Fig. 3 is a sectional view of a conventional timer spring support structure, Fig. 4 is a sectional view of the timer spring support structure of the device shown in Fig. 2, and Fig. 5 shows the relationship between pump rotation speed and timer advance amount. General advance angle characteristic diagram - Figure 6 is a relationship diagram between fuel temperature and timer spring set load, and Figure 7 is an advance angle characteristic diagram of the device of the present invention showing the relationship between pump rotation speed and timer advance amount. , is. 3...Timer, 4...Timer housing, 4a...Timer case, 5...Timer piston, 6...Timer spring, 9・
...Washer, 10...Thermal expansion device,
13...Wax.

Claims

[Scope of utility model registration request]

The timer is equipped with a timer in which the timer piston is balanced by hydraulic pressure and a timer spring that urges the timer piston in the injection direction, and is slidably inserted into the timer spring to control the injection timing according to the fuel pressure. In the distribution type fuel injection pump according to the present invention, a thermal expansion device is interposed between the timer cover of the timer housing and the timer spring located on the opposite side of the timer piston with respect to the timer spring. Angle control device.