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    • 4. 发明申请
    • PUMP HAVING PORT PLATE PRESSURE CONTROL
    • 具有端口板压力控制的泵
    • WO2012162487A2
    • 2012-11-29
    • PCT/US2012039322
    • 2012-05-24
    • CATERPILLAR INCUNIV MISSOURIMEHTA VIRAL SDU HONGLIUNELSON BRYAN EMANRING NOAH
    • MEHTA VIRAL SDU HONGLIUNELSON BRYAN EMANRING NOAH
    • F04B1/29F04B1/20
    • F04B1/306
    • A pump (28) is disclosed. The pump may have a housing (42), a body (46) rotatably disposed within the housing and at least partially defining a plurality of barrels (48), a plurality of plungers (50) associated with the plurality of barrels, and a swashplate (56) tiltable by a swivel torque to vary a displacement of the plurality of plungers relative to the plurality of barrels. The pump may also have a port plate (53) with an inlet port (72), a discharge port (74), and a protrusion (94). The port plate may be configured to engage an end of the rotatable body. The pump may further have at least one piston (90, 92)disposed within the housing and configured to selectively engage the protrusion of the port plate to rotate the port plate and adjust the swivel torque.
    • 公开了一种泵(28)。 泵可以具有壳体(42),可旋转地设置在壳体内并且至少部分地限定多个筒(48)的主体(46),与多个筒相关联的多个柱塞(50)和斜盘 (56)可通过旋转扭矩倾斜,以改变多个柱塞相对于多个筒的位移。 泵还可以具有带有入口端口(72),排出口(74)和突起(94)的端口板(53)。 端口板可以构造成接合可旋转主体的端部。 所述泵还可以具有设置在所述壳体内的至少一个活塞(90,92),并且构造成选择性地接合所述端口板的突出部以使所述端口板旋转并调节所述旋转扭矩。
    • 5. 发明申请
    • ENGINE SYSTEM WITH REVERSIBLE FAN
    • 具有可逆风扇的发动机系统
    • WO2012166881A3
    • 2013-02-14
    • PCT/US2012040155
    • 2012-05-31
    • CATERPILLAR INCNELSON BRYAN EPETERSON RANDAL NPETERSON JEREMY T
    • NELSON BRYAN EPETERSON RANDAL NPETERSON JEREMY T
    • F01P5/02F01P3/18F01P7/04
    • F01P5/043F01P11/06
    • An engine system (140) includes an engine (12), a primary pump (14) coupled to the engine (12), and a motor (18) fluidly connected to the primary pump (14). The engine system (140) further includes a heat exchanger (28) fluidly connected to the engine (12), the heat exchanger (28) configured to accept heated coolant from the engine (12) and deliver cooled coolant to the engine (20). The engine system (140) also includes a fan (20) driven by the motor (18) in either a forward or a reverse mode of operation, the fan (20) configured to pull air toward the heat exchanger (28) in a first direction during the forward mode of operation to assist in cooling the coolant, and to push air toward the heat exchanger (28) in a second direction opposite the first direction during the reverse mode of operation. The engine system (140) further includes a controller (68) configured to operate the fan (20) in the reverse mode of operation in response to a sensed temperature of the coolant and a speed of the fan (20) in the forward mode of operation.
    • 发动机系统(140)包括发动机(12),联接到发动机(12)的主泵(14)和与主泵(14)流体连接的马达(18)。 发动机系统(140)还包括流体连接到发动机(12)的热交换器(28),所述热交换器(28)构造成接收来自发动机(12)的加热的冷却剂并将冷却的冷却剂输送到发动机(20) 。 发动机系统(140)还包括以正向或反向操作模式由电动机(18)驱动的风扇(20),所述风扇(20)构造成以第一方式将空气朝向热交换器(28) 在向前的操作模式期间有助于冷却冷却剂,并且在反向操作模式期间沿与第一方向相反的第二方向将空气推向热交换器(28)。 发动机系统(140)还包括控制器(68),其被配置为响应于感测到的冷却剂的温度和风扇(20)的向前模式的速度而以相反的操作模式操作风扇(20) 操作。