JPH0368581U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案になる燃料ポンプの一実施例を
示す縦断面図である。 １……ポンプ本体、２……カバー、３……区画
体、４……脈動圧導入路、５……吸入弁座、６…
…吸入弁、７……燃料吸入路、８……吐出弁座、
９……吐出弁、１０……燃料吐出路、Ｐ……ポン
プ室、Ｇ……受圧室、Ｆ_１……吐出弁の吐出弁座
に対する閉止力、Ｆ_２……吸入弁の吸入弁座に対
する閉止力、Ｋ……調整手段。 FIG. 1 is a longitudinal sectional view showing an embodiment of the fuel pump according to the present invention. DESCRIPTION OF SYMBOLS 1...Pump body, 2...Cover, 3...Dividing body, 4...Pulsating pressure introduction path, 5...Suction valve seat, 6...
...Suction valve, 7...Fuel suction passage, 8...Discharge valve seat,
9...Discharge valve, 10...Fuel discharge path, P...Pump chamber, G...Pressure receiving chamber, _F1 ...Closing force on the discharge valve seat of the discharge valve, _F2 ...Seat of the suction valve on the suction valve seat Closing force, K...adjustment means.

Claims (1)

【実用新案登録請求の範囲】 ポンプ本体と、ポンプ本体の一側の端面をお
おうカバーとの間に区画体を配置し、区画体の他
側面にポンプ室を形成し、区画体の一側面に受圧
室を形成し、ポンプ室には、内部に設けた吸入弁
座を開閉する吸入弁を備えた燃料吸入路と、内部
に設けた吐出弁座を開閉する吐出弁を備えた燃料
吐出路と、を開口するとともに受圧室には、機関
に生起する脈動圧力を脈動圧導入部を介して導入
した燃料ポンプにおいて、 吐出弁の吐出弁座に対する閉止力Ｆ_１を、吸入
弁の吸入弁座に対する閉止力Ｆ_２に比較して大と
するとともに吐出弁の吐出弁座に対する閉止力Ｆ
_１を調整する調整手段を設けてなる燃料ポンプ。 前記、吐出弁を、吐出弁座に対してスプリン
グのバネ力にて押圧して閉止するとともにスプリ
ングの一端部にスプリングのバネ力を調整し得る
調整手段を配置してなる請求項第１項記載の燃料
ポンプ。[Scope of Claim for Utility Model Registration] A partition is arranged between the pump body and a cover covering one end face of the pump body, a pump chamber is formed on the other side of the partition, and a pump chamber is formed on one side of the partition. A pressure receiving chamber is formed, and the pump chamber has a fuel suction passage equipped with a suction valve that opens and closes an internal suction valve seat, and a fuel discharge passage equipped with a discharge valve that opens and closes an internal discharge valve seat. In the fuel pump, in which the pulsating pressure generated in the engine is introduced into the pressure receiving chamber through the pulsating pressure introduction part, the closing force _F1 applied to the discharge valve seat of the discharge valve is applied to the suction valve seat of the suction valve. The closing force F is larger than ₂ , and the closing force F against the discharge valve seat of the discharge valve is
A fuel pump provided with an adjusting means for adjusting ₁ . Claim 1, wherein the discharge valve is closed by being pressed against the discharge valve seat by the spring force of a spring, and an adjusting means for adjusting the spring force of the spring is disposed at one end of the spring. fuel pump.