会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明申请
    • HIGH-PRESSURE FUEL PUMP
    • 高压燃油泵
    • WO2012065566A1
    • 2012-05-24
    • PCT/CN2011/082397
    • 2011-11-18
    • ROBERT BOSCH GMBHTANG, ZhaohuiZHANG, JianxinHUA, Guanqun
    • TANG, ZhaohuiZHANG, JianxinHUA, Guanqun
    • F02M59/44F02M37/06
    • F02M59/442
    • A high-pressure fuel pump comprises a high-pressure assembly (2) for receiving fuel from a fuel tank and pressurizing the fuel, and a driving shaft (3) comprising a cam (50) for driving the high-pressure assembly (2). The high-pressure assembly (2) comprises a plunger sleeve (20), a plunger (22) to be moved in the plunger sleeve (20) back and forth, and a check valve assembly (24). A pressurizing chamber (26) is defined between the front end of the plunger (22) and the check valve assembly (24) in the plunger sleeve (20). The plunger sleeve (20) is formed with a fuel feeding hole (30) through which the fuel is drawn into the pressurizing chamber (26), and a leakage discharging passage (34a,34b) for returning leaked fuel from the pressurizing chamber (26) through a gap between the plunger (22) and the plunger sleeve (20) back to the fuel tank completely. High-temperature leaked fuel is returned back to the fuel tank completely, which prevents temperature increasing and velocity decreasing of the fuel in the pressurizing chamber.
    • 高压燃料泵包括用于从燃料箱接收燃料并对燃料加压的高压组件(2)和包括用于驱动高压组件(2)的凸轮(50)的驱动轴(3) 。 高压组件(2)包括柱塞套筒(20),待柱塞套筒(20)前后运动的柱塞(22)和止回阀组件(24)。 压力室(26)限定在柱塞(22)的前端和柱塞套(20)中的止回阀组件(24)之间。 柱塞套(20)形成有燃料供给孔(30),燃料通过该燃料供给孔被吸入加压室(26),以及用于使来自加压室(26)的泄漏燃料返回的泄漏排出通路(34a,34b) )通过柱塞(22)和柱塞套(20)之间的间隙完全回到燃料箱。 高温泄漏的燃料完全返回到燃料箱,这防止加压室内的燃料温度升高和速度降低。