PUMP AND FUEL INJECTION DEVICE

• Main Authors: MURAKAMI KOICHI, MIZUI HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 16.05.2016
• Subjects: BLASTING; COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

PROBLEM TO BE SOLVED: To provide a pump and a fuel injection device for restricting occurence of vapor so as to restrict discharging of fuel and occurrence of insufficiency of fuel pressure and enabling a stable operation of vehicles, agricultural devices and power generators or the like installed with internal combustion engines.SOLUTION: A pump 30 comprises a pump main body 31 defining a pump chamber 35e; a plunger 35a reciprocated in response to rotation of an eccentric cam 41a to cause fuel sucked into a pump chamber 35e to be fed out to an injector; and an input part 31c to which a rotation torque from outside is inputted. The input part 31c comprises an eccentric cam 41a connected to a coupler member 38 connected to a rotating member; a hub part 32g pivotally supporting the coupler member 38; and a bushing 32d for restricting a motion in an axial direction of the coupling member 38.SELECTED DRAWING: Figure 3 【課題】ベーパの発生を抑制することで燃料の吐出及び燃圧不全の発生を抑制し、内燃機関を備える乗り物、農機具、発電機等の安定した運転を可能とするポンプ及び燃料噴射装置を提供する。【解決手段】ポンプ３０は、ポンプ室３５ｅを画定するポンプ本体３１と、偏心カム４１ａの回転に応じて往復動することで、ポンプ室３５ｅ内に吸引した燃料をインジェクタに送出するプランジャ３５ａと、外部からの回転トルクが入力される入力部分３１ｃとを備える。入力部分３１ｃは、回転部材に接続された接手部材３８に連結された偏心カム４１ａと、接手部材３８を軸支するボス部３２ｇと、接手部材３８の軸方向の動きを規制するブッシュ３２ｄと、を備える。【選択図】図３