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公开(公告)号：EP0924655B2
公开(公告)日：2007-08-29
申请号：EP98120627.9
申请日：1998-11-02
申请人： TRW INC.
CPC分类号： G07F7/1008 , G06K9/00006 , G06Q20/341 , G06Q20/40145 , G07C9/00087 , G07C9/00111 , G07C2009/00095
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公开(公告)号：EP1425521A4
公开(公告)日：2007-06-27
申请号：EP02728989
申请日：2002-04-25
申请人： TRW INC
发明人： HARER DENNIS F , ALLEN WILLIAM E
CPC分类号： B62D3/123 , F16H55/283 , Y10T74/1967
摘要： A rack and pinion steering gear (10) includes a housing (12), a pinion gear (20) rotatably mounted in the housing, and a rack (16) movable relative to the pinion gear. A preassembled yoke assembly (36) includes a yoke (38, 100), a yoke plug (42, 104), and a biasing member (40, 102) assembled as a single unit and positioned in the yoke bore (22). The yoke (38, 100) and yoke plug (42, 104) are movable relative to each other along an axis (A) of the preassembled yoke assembly (36) and have opposing surfaces spaced a predetermined distance from each other. The biasing member (40, 102) is supported between the yoke (38, 100) and yoke plug (42, 104) and biases the opposing surfaces away from each other. The opposing surfaces are movable toward each other against the bias of the biasing member (40, 102).
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公开(公告)号：EP1315885B1
公开(公告)日：2006-06-21
申请号：EP01962364.4
申请日：2001-08-09
申请人： TRW INC.
发明人： STOLL, Richard, A.
CPC分类号： B62D5/12 , F15B15/1447 , F16J1/008
摘要： A hydraulic power assist steering system for a vehicle having steerable wheels comprises a housing (14) and a rack (16). The system also comprises a fluid motor (20) for moving the rack (16). The fluid motor (20) includes a piston (10) fixedly connected to the rack (16) and a pump (36). The piston (10) has first and second opposite end faces (82, 84) against which hydraulic fluid is directed by the pump (36) to effect movement of the piston (10), and thereby the rack (16), relative to the housing (14). The piston (10) has a wall (60) including a first end portion (64), a second end portion (66), and a central portion (62). The central portion (62) has an outer peripheral groove (70) for a seal ring (86). The first end portion (64), the second end portion (66), and the central portion (62) define a cavity (80) in the piston (10).
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公开(公告)号：EP1277975B1
公开(公告)日：2005-11-16
申请号：EP02015942.2
申请日：2002-07-17
申请人： TRW INC.
发明人： Gordon, Gary G.
CPC分类号： F16B1/0071 , F16B21/02 , F16B2005/0671 , Y10S411/913
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公开(公告)号：EP1315885A4
公开(公告)日：2004-12-08
申请号：EP01962364
申请日：2001-08-09
申请人： TRW INC
发明人： STOLL RICHARD A
CPC分类号： B62D5/12 , F15B15/1447 , F16J1/008
摘要： A hydraulic power assist steering system for a vehicle having steerable wheels comprises a housing (14) and a rack (16). The system also comprises a fluid motor (20) for moving the rack (16). The fluid motor (20) includes a piston (10) fixedly connected to the rack (16) and a pump (36). The piston (10) has first and second opposite end faces (82, 84) against which hydraulic fluid is directed by the pump (36) to effect movement of the piston (10), and thereby the rack (16), relative to the housing (14). The piston (10) has a wall (60) including a first end portion (64), a second end portion (66), and a central portion (62). The central portion (62) has an outer peripheral groove (70) for a seal ring (86). The first end portion (64), the second end portion (66), and the central portion (62) define a cavity (80) in the piston (10).
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公开(公告)号：EP1429953A2
公开(公告)日：2004-06-23
申请号：EP02799566.1
申请日：2002-09-04
申请人： TRW INC.
IPC分类号： B62D5/06
摘要： A fluid power assisted rack and pinion steering apparatus (10) for a vehicle includes a rack (40) connectable with steerable wheels of the vehicle, a housing (20) partially enclosing the rack (40) and defining a fluid chamber (39), a bushing (390 or 590) encircling the rack (40), a sleeve (420 or 620) supporting the rack (40) for sliding movement relative to the bushing (390 or 590), and a fluid tight seal member (370 or 570) for sealing the fluid chamber (39) .
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公开(公告)号：EP1106397A3
公开(公告)日：2004-01-21
申请号：EP00125323.6
申请日：2000-11-29
申请人： TRW Inc.
发明人： Magiawala, Kiran R. , Eberhard, Carol A. , McIver, George W. , Dunbridge, Barry (NMI) , Zimmerman, Thomas A.
IPC分类号： B60C23/04 , B60C23/06 , B60G17/015 , G01M1/28 , G01P3/44
CPC分类号： B60C23/061 , B60C23/0408 , B60C23/0494
摘要： A system and method for monitoring tread wear, shock absorber performance, balance condition of a vehicle tire, and/or rotational speed of a vehicle wheel use a sensor (2,4) which senses at least one of radial and lateral acceleration of a tire to provide acceleration signals. To monitor tread wear, at least one processor (14) is provided and is responsive to acceleration signals from the sensor and determines at least one resonance frequency of at least one of the radial and lateral acceleration of the tire, e.g., by taking a Fast Fourier Transform (FFT) of the radial and/or lateral acceleration signals to determine a resonance frequency in the range of 30-60 Hz, compares the determined at least one resonance frequency to at least one stored frequency indicative of no tire wear to determine a frequency shift, and determine tire tread wear on the basis of the frequency shift, and provides an information signal indicative of tire tread wear which is transmitted to a driver information display. To monitor shock absorber performance, the at least one processor determines an amplitude of the Fourier component of the radial acceleration, e.g., in the range of 0.5-2.0 Hz, compares the amplitude to a stored amplitude, e.g., in the range of 0.5-2.0 Hz indicative of a new shock absorber for the vehicle, and determines shock absorber performance on the basis of any change in the amplitude over the stored amplitude, and provides an information signal indicative of shock absorber performance which is transmitted to the driver information display. To monitor a balance condition of a vehicle tire, the at least one processor is responsive to acceleration signals from the sensor and calculates a Discrete Fourier Transform (DFT) of the acceleration signals, e.g., by taking a Fast Fourier Transform (FFT) of the acceleration signals, measured over a time duration longer than a vehicle suspension time constant, determines an amplitude of the Fourier component of the radial acceleration, e.g., in the range of 5-14 Hz, compares the amplitude profiles to a stored amplitude profile, e.g., in the range of 5-14 Hz indicative of a specification predetermined balanced tire for the vehicle, and determines any out of specification predetermined balance condition of the tire on the basis of any increase in the amplitude over the stored amplitude. To monitor wheel rotational speed, a transceiver transmits from the sensor a radial signal frequency, e.g., in the range of 0-25 Hz, indicative of wheel rotational speed to a vehicle controller such as an antilock braking system or an integrated vehicle controller. All of the above frequency ranges may vary with vehicle and tire type.
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公开(公告)号：EP1085640A3
公开(公告)日：2004-01-07
申请号：EP00119491.9
申请日：2000-09-18
申请人： TRW INC.
发明人： Vyas, Rajeev
CPC分类号： H02K19/103 , Y10T29/49012
摘要： A rotor (10) for an electric machine (40) includes a first elongated rotor segment (12) having a plurality of axially extending rotor poles (20) arranged in a circular array about a central axis (18) that extends longitudinally through the first rotor segment(12). A second axially extending rotor segment (14) engages and is fixed relative to the first rotor segment (12). The second rotor segment (14) has a plurality of axially extending rotor poles (38) arranged in a circular array about the central axis (18). The poles (38) of the second rotor segment (14) are rotated in a first direction about the central axis relative to the poles (20) of the first rotor segment (12). Preferably the rotor (10) also includes a third axially extending rotor segment (16) that engages and is fixed relative to at least one of the first and second rotor segments (12, 14). The third rotor segment (16) also has a plurality of axially extending rotor poles (44) arranged in a circular array about the central axis (18). The poles (44) of the third rotor segment (16) are rotated about the central axis (18) relative to the poles (20, 38) of each of the first and second rotor segments (12, 14).
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公开(公告)号：EP1357821A1
公开(公告)日：2003-11-05
申请号：EP02702152.6
申请日：2002-02-06
申请人： TRW INC.
发明人： WOLFE, George, B.
IPC分类号： A47B97/00
CPC分类号： B60R21/01516 , B60N2/002 , B60R21/0152 , G01G19/4142
摘要： A vehicle has a seat (2) for a vehicle occupant and a vehicle floor pan (4). An apparatus (10) includes a vehicle seat frame (20) for supporting a load of the vehicle occupant and a weight sensing mechanism (40) for sensing the load. The weight sensing mechanism (40) includes a parallelogram linkage (50), a sensor lever (70), and a sensor (79).
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公开(公告)号：EP1176734A3
公开(公告)日：2003-11-05
申请号：EP01113537.3
申请日：2001-06-12
申请人： TRW Inc.
IPC分类号： H04B7/005
CPC分类号： H04W52/42
摘要： A power control system for a multi-carrier base station transmitter is capable of controlling power levels of individual RF carriers. The power control system has a multi-channel conversion system for generating a plurality of analog reference signals corresponding to a plurality of digital input signals. The multi-channel conversion system also generates an analog multi-carrier signal and samples the multi-carrier signal. The multi-carrier signal represents a summed amplification of the digital input signals. A correlating power detection system is connected to the multi-channel conversion system and generates digital total power control signals based on the analog reference signals and the analog sampled multi-carrier signal. A feedback conversion module is connected to the multi-channel conversion system and the correlating power detection system and individually controls amplification of the digital input signals based on the total power control signals.
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