VARIABLE DELIVERY PUMP AND COMMON RAIL FUEL SYSTEM USING THE SAME
    1.
    发明授权
    VARIABLE DELIVERY PUMP AND COMMON RAIL FUEL SYSTEM USING THE SAME 有权
    随着共轨燃油喷射变流量及其用途泵

    公开(公告)号:EP1171707B1

    公开(公告)日:2003-09-03

    申请号:EP00923379.2

    申请日:2000-04-14

    申请人: CATERPILLAR INC.

    IPC分类号: F02M59/36 F02M41/12 F02M63/02

    摘要: Pressurized injector actuation fluid is supplied to high pressure common rail (28) by a fixed displacement fluid pump (26). Variable delivery from the pump (26) is achieved by selectively spilling pumped fluid through a digital-acting by-pass or spill valve (90). The by-pass valve (90) is actuated by a momentary electric signal, which causes internal fluid pressure in the valve (90) to latch it in a closed condition, thus permitting high precision variations in the pump delivery with rapid response times. Unit pump (26), radial pump (400), and axial pump (500) configurations are disclosed. Variable delivery is achieved in another embodiment by an improved sleeve metering approach. The sleeve (692) surrounds the reciprocating piston (672) and is manipulated to control venting of pumped fluid through vent ports (686) in the piston (672). The sleeve (692) is moved by preferably being the armature of a solenoid assembly (698). The varying of current to the solenoid coil (696) alters the axial position of the sleeve (692) relative to the piston (672) to vary its effective pumping stroke.

    PUMP
    2.
    发明公开
    PUMP 审中-公开

    公开(公告)号:EP1077330A1

    公开(公告)日:2001-02-21

    申请号:EP99931540.1

    申请日:1999-07-26

    IPC分类号: F04B43/02

    摘要: A pump according to the present invention comprises the main pump body 12 including the casing 14 to which the fluid is supplied, and the input valve section 18, the pump section 16, and the output valve section 20 which are provided opposingly to the back surface of the casing 14, for selectively forming a flow passage on the back surface of the casing 14 in accordance with selective displacement action of the input valve section 18, the pump section 16, and the output valve section 20 in a direction to make approach or separation with respect to the back surface of the casing 14, wherein the fluid is controlled for its flow in accordance with the selective formation of the flow passage.
    With the above arrangement, a pump can be of the compact and thin type, making it possible to increase the discharge amount (movement amount) of fluid.

    摘要翻译: 根据本发明的泵包括:主泵体12,其包括被供应流体的壳体14;以及输入阀部18,泵部16和输出阀部20,其与背面相对设置 ,用于根据输入阀部分18,泵部分16和输出阀部分20的选择性位移作用,在壳体14的后表面上选择性地形成流动通道, 相对于壳体14的后表面的分离,其中根据流动通道的选择性形成来控制流体的流动。 利用上述布置,泵可以是紧凑和薄型的,使得可以增加流体的排出量(移动量)。

    Control valve in variable displacement compressor
    3.
    发明公开
    Control valve in variable displacement compressor 审中-公开
    变容式压缩机中的控制阀

    公开(公告)号:EP1026397A2

    公开(公告)日:2000-08-09

    申请号:EP00101853.0

    申请日:2000-01-31

    IPC分类号: F04B27/18

    摘要: A variable displacement compressor includes a swash plate (31) and a displacement control valve (46; 88). The swash plate is moved between a maximum inclination position and a minimum inclination position in accordance with the pressure in a crank chamber (15). The control valve changes the crank chamber pressure to change the swash plate inclination. The control valve includes a valve body (52; 96) and an electromagnetic actuator (60, 61, 64; 97) for moving the valve body. Movement of the valve body is controlled according to current supplied to the actuator. The control valve also includes a fluid damper (90, 91; 59, 61) for applying fluid resistance to the valve body. The fluid resistance prevents the valve body from moving too quickly. The fluid damper therefore prevents the crank chamber pressure from being suddenly changed. Also, the fluid damper prevents the swash plate inclination from being suddenly changed. Instead of using the fluid damper, the sudden movement of the valve body may be prevented by controlling current supplied to the electromagnetic actuator.

    摘要翻译: 一种可变排量压缩机包括斜盘(31)和排量控制阀(46; 88)。 根据曲轴室(15)中的压力,斜盘在最大倾角位置和最小倾角位置之间移动。 控制阀改变曲轴箱压力以改变斜盘倾斜度。 控制阀包括用于移动阀体的阀体(52; 96)和电磁致动器(60,61,64,97)。 根据提供给致动器的电流来控制阀体的运动。 控制阀还包括用于向阀体施加流体阻力的流体阻尼器(90,91; 59,61)。 流体阻力防止阀体移动太快。 因此流体阻尼器防止曲轴室压力突然改变。 而且,流体阻尼器防止斜盘倾斜突然改变。 代替使用流体阻尼器,可以通过控制供应给电磁致动器的电流来防止阀体的突然移动。

    Air conditioning systems
    4.
    发明公开
    Air conditioning systems 审中-公开
    空调系统

    公开(公告)号:EP1001230A2

    公开(公告)日:2000-05-17

    申请号:EP99121394.3

    申请日:1999-10-27

    摘要: The air conditioning system 100 may include a compressor 101, a heating circuit 152, and a refrigerant releaser 181. The compressor 101 may have a suction port 115 for drawing refrigerant and a discharge port for 120 discharging compressed refrigerant. The heating circuit 152 has a passage 152a that extends from the discharge port 120 to the suction port 115 though a heat exchanger 159.
    The refrigerant releaser 181 may release the refrigerant from the discharge port 120 to the suction port 115 when the discharge pressure Pd of the refrigerant results a predetermined high-pressure state during the operation of the heating circuit 152.
    The air conditioning system 100 can solve a problem of insufficient heating performance due to releasing the refrigerant in the heating circuit into the cooling circuit to alleviate the abnormally high-pressure state during operation of the heating circuit.

    摘要翻译: 空调系统100可以包括压缩机101,加热回路152和制冷剂释放器181.压缩机101可以具有用于吸入制冷剂的吸入口115和用于排出被压缩的制冷剂的排出口120。 加热回路152具有经由热交换器159从排出口120延伸到吸入口115的通路152a。当排出压力Pd为 在加热回路152运行期间,制冷剂产生预定的高压状态。空调系统100可以解决由于将加热回路中的制冷剂释放到冷却回路中而导致的加热性能不足的问题, 在加热回路运行期间的压力状态。

    VARIABLE DELIVERY PUMP AND COMMON RAIL FUEL SYSTEM USING THE SAME
    9.
    发明公开
    VARIABLE DELIVERY PUMP AND COMMON RAIL FUEL SYSTEM USING THE SAME 有权
    随着共轨燃油喷射变流量及其用途泵

    公开(公告)号:EP1171707A1

    公开(公告)日:2002-01-16

    申请号:EP00923379.2

    申请日:2000-04-14

    申请人: CATERPILLAR INC.

    IPC分类号: F02M59/36 F02M41/12 F02M63/02

    摘要: Pressurized injector actuation fluid is supplied to high pressure common rail (28) by a fixed displacement fluid pump (26). Variable delivery from the pump (26) is achieved by selectively spilling pumped fluid through a digital-acting by-pass or spill valve (90). The by-pass valve (90) is actuated by a momentary electric signal, which causes internal fluid pressure in the valve (90) to latch it in a closed condition, thus permitting high precision variations in the pump delivery with rapid response times. Unit pump (26), radial pump (400), and axial pump (500) configurations are disclosed. Variable delivery is achieved in another embodiment by an improved sleeve metering approach. The sleeve (692) surrounds the reciprocating piston (672) and is manipulated to control venting of pumped fluid through vent ports (686) in the piston (672). The sleeve (692) is moved by preferably being the armature of a solenoid assembly (698). The varying of current to the solenoid coil (696) alters the axial position of the sleeve (692) relative to the piston (672) to vary its effective pumping stroke.

    KRAFTSTOFFEINSPRITZSYSTEM
    10.
    发明公开
    KRAFTSTOFFEINSPRITZSYSTEM 有权
    燃油喷射

    公开(公告)号:EP1115975A1

    公开(公告)日:2001-07-18

    申请号:EP99953704.6

    申请日:1999-09-02

    发明人: EISENBACHER, Egon

    IPC分类号: F02M63/02

    摘要: Disclosed is a fuel injection system for an internal combustion engine, comprising a presupply pump (2) and a high-pressure pump (16) used to pump pressurized fuel into a common rail (18). The supply pressure of the high-pressure pump (16) is brought to a high level of pressure when the internal combustion engine is started, whereby the pressure in the common rail (18) required for optimum atomization can be built up very quickly.