公开(公告)号：EP2150783A1

公开(公告)日：2010-02-10

申请号：EP08726324.0

申请日：2008-03-01

申请人： Hewitt, John T.

发明人： Hewitt, John T.

IPC分类号： G01F23/16 ,  G01F25/00 ,  G01L7/06

CPC分类号： G01F23/164 ,  G01F25/0061 ,  G01L7/063

摘要： A liquid level sensor system (50) actuated by a column pressure includes a sensor head unit and a hollow member (60) having a distal open end (62) adapted to be positioned into a liquid reservoir (10). A connection tubing system (70) is adapted to provide a closed connection between the hollow member and the sensor head unit which further comprises: a bellows member (120) having an input stem portion (122) adapted for connection to the connection tubing system, an expandable body portion (124) and a distal bellows face surface (126), the bellows body adapted for expansion and contraction in response to differential column pressure changes so that said bellows face surface translates along a range of movement; a non-electrically-powered mechanism (112) responsive to movement of said bellows face surface to provide an indication of the liquid level.

公开(公告)号：EP0916020A1

公开(公告)日：1999-05-19

申请号：EP96939694.0

申请日：1996-11-14

申请人： Hewitt, John T.

发明人： Hewitt, John T.

IPC分类号： F02M37 ,  B60K31 ,  F02D17 ,  F02D41 ,  F02M59 ,  F02M63 ,  F02B3

CPC分类号： B60K31/00 ,  B60K31/04 ,  B60K31/185 ,  B60W2710/0616 ,  F02B3/06 ,  F02D17/04 ,  F02M59/38 ,  F02M59/447 ,  F02M63/0205

摘要： A vehicle speed limiting system for a vehicle having an engine which includes a plurality of fuel injectors (12) coupled to an inline, low volume fuel injection pump (10) operative to successively trigger a flow of fuel directly to the individual fuel injectors (12). The vehicle speed is converted to a speed signal which, when it reaches a preset limit, is utilized by the system control to close a fuel control (16) through which fuel normally passes to the injection pump (10), and also to simultaneously open a pressure regulator (24). The fuel control (16) includes a small orifice (60) to pass just enough fuel to prevent pump cavitation. The system is characterized by a low fuel residual upon cutoff by the fuel control (16) so that the engine speed is quickly slowed for lack of fuel.

公开(公告)号：EP0916020B1

公开(公告)日：2000-09-20

申请号：EP96939694.4

申请日：1996-11-14

申请人： Hewitt, John T.

发明人： Hewitt, John T.

IPC分类号： F02D17/04 ,  F02M63/02 ,  F02M59/44 ,  B60K31/04

CPC分类号： B60K31/00 ,  B60K31/04 ,  B60K31/185 ,  B60W2710/0616 ,  F02B3/06 ,  F02D17/04 ,  F02M59/38 ,  F02M59/447 ,  F02M63/0205

摘要： A vehicle speed limiting system for a vehicle having an engine which includes a plurality of fuel injectors (12) coupled to an inline, low volume fuel injection pump (10) operative to successively trigger a flow of fuel directly to the individual fuel injectors (12). The vehicle speed is converted to a speed signal which, when it reaches a preset limit, is utilized by the system control to close a fuel control (16) through which fuel normally passes to the injection pump (10), and also to simultaneously open a pressure regulator (24). The fuel control (16) includes a small orifice (60) to pass just enough fuel to prevent pump cavitation. The system is characterized by a low fuel residual upon cutoff by the fuel control (16) so that the engine speed is quickly slowed for lack of fuel.

公开(公告)号：EP0016236B1

公开(公告)日：1983-07-27

申请号：EP79100834.5

申请日：1979-03-19

申请人： Hewitt, John T.

发明人： Hewitt, John T.

IPC分类号： F02D1/14 ,  G05D13/66

CPC分类号： F02M63/022 ,  F02B3/06 ,  F02D1/025 ,  F02D1/12 ,  F02D1/14 ,  F02D41/1446

公开(公告)号：EP2347225A1

公开(公告)日：2011-07-27

申请号：EP09767756.1

申请日：2009-06-18

申请人： Hewitt, John T.

发明人： Hewitt, John T.

IPC分类号： G01F23/00 ,  G01F23/16 ,  G01F23/18

CPC分类号： G01F23/164 ,  G01F23/18 ,  G01F25/0061 ,  G01L7/063

摘要： A liquid level sensor system actuated by a column pressure includes a hollow member having a distal open end adapted to be positioned into a liquid reservoir to a depth below a liquid surface level, and a sensor head unit. The sensor head unit is responsive to the column pressure to provide an indication of a liquid level in the reservoir. A low liquid level alarm circuit is responsive to the bellows member to generate a signal indicative of a low liquid level state.

公开(公告)号：EP0016236A1

公开(公告)日：1980-10-01

申请号：EP79100834.5

申请日：1979-03-19

申请人： Hewitt, John T.

发明人： Hewitt, John T.

IPC分类号： F02D1/14 ,  G05D13/66

CPC分类号： F02M63/022 ,  F02B3/06 ,  F02D1/025 ,  F02D1/12 ,  F02D1/14 ,  F02D41/1446

摘要： There is disclosed an automatic control system for limiting the operating temperature of a diesel engine (10) having a shut down lever (52) that repositions the rack of its fuel pump (12) to a shut down position that closes the pump metering valves and shuts off the fuel supply to the engine. The system includes a pyrometer (24) to sense the exhaust gas temperature from the engine and generate a signal therefrom, a temperature controller (30) having an adjustable, maximum set point temperature to receive the signal from the pyrometer (24) and to generate a control signal which is applied to a control valve (102) in a fluid pressure line (99) which applies fluid pressure to a pressure responsive actuator (82) that moves the shut down lever (52) a fraction of its full travel necessary for shut down and thereby repositions the fuel pump rack to a throttling position in response to a sensed exhaust gas temperature which exceeds the preselected maximum set point temperature.

摘要翻译： 公开了一种用于限制具有关闭杆（52）的柴油发动机（10）的操作温度的自动控制系统，其将其燃料泵（12）的齿条重新定位到关闭泵计量阀和关闭的关闭位置 关闭发动机的燃油供应。 该系统包括用于感测来自发动机的排气温度并从其产生信号的高温计（24），温度控制器（30），其具有可调节的最大设定点温度以接收来自高温计（24）的信号并产生 控制信号被施加到流体压力管线（99）中的控制阀（102），该流体压力管线（99）将流体压力施加到压力响应致动器（82），所述压力响应致动器（82）使所述关闭杆（52）移动所需的全部行程的一部分 用于关闭并因此响应于超过预选最大设定点温度的感测到的废气温度将燃料泵架重新定位到节流位置。