Steering and braking systems for a coasting motor vehicle
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60W-020/00
B60W-030/18
F02D-029/02
B60W-010/02
B60W-010/06
F16H-057/04
F16H-061/00
출원번호
US-0750777
(2015-06-25)
등록번호
US-10207710
(2019-02-19)
발명자
/ 주소
Daims, Kurt
출원인 / 주소
Daims, Kurt
대리인 / 주소
Nessler, C.
인용정보
피인용 횟수 :
0인용 특허 :
16
초록▼
Apparatus for providing hydraulic line pressure and vacuum pressure to the braking and steering subsystems of a wheeled motor vehicle comprises one or more battery powered electric motors which drive one or more of a hydraulic pump and a vacuum pump. When the engine is stopped while the vehicle is m
Apparatus for providing hydraulic line pressure and vacuum pressure to the braking and steering subsystems of a wheeled motor vehicle comprises one or more battery powered electric motors which drive one or more of a hydraulic pump and a vacuum pump. When the engine is stopped while the vehicle is moving, to save fuel, the electric motor(s) drive the pumps, so that hydraulic pressure and vacuum are provided, for safe operation of the vehicle.
대표청구항▼
1. A method of operating a motor vehicle powered by an internal combustion engine, for moving the vehicle across a surface in a way which lowers the consumption of fuel by the engine, the vehicle having wheels and a drivetrain connected to the wheels, with which drivetrain the engine is selectively
1. A method of operating a motor vehicle powered by an internal combustion engine, for moving the vehicle across a surface in a way which lowers the consumption of fuel by the engine, the vehicle having wheels and a drivetrain connected to the wheels, with which drivetrain the engine is selectively engaged for motive power transmittal; the engine comprising a rotary output shaft and, an endless belt driven by said rotary output shaft; the vehicle comprising a vacuum-augmented braking subsystem, and a hydraulic pressure augmented steering subsystem which method comprises: (a) providing an auxiliary apparatus comprising (i) an electric motor, mounted on or in close proximity to said engine, the electric motor comprising a rotatable main shaft and an armature mounted fixedly on the main shaft for rotating the main shaft when the electric motor is connected to a power supply, the electric motor having a housing for rotatably supporting said main shaft,(ii) a hydraulic pump, mounted on or integrated with said housing and driven by said main shaft, the hydraulic pump connected to said hydraulic power-augmented steering subsystem, to provide pressurized hydraulic fluid thereto;(iii) a vacuum pump, mounted on or integrated with said housing and driven by said main shaft, the vacuum pump connected to the vacuum-power augmented brake subsystem, to draw sub-atmospheric air from the subsystem to the vacuum pump;(iv) an over-running clutch having a drive portion and a driven portion, the driven portion mounted on or connected to said main shaft;(v) a pulley connected to the said drive portion of the over-running clutch, for rotating said main shaft in one direction only, the pulley engaged with said engine endless belt for rotary motion of said drive portion;wherein the over-running clutch enables (a) the pulley, when acted on by the endless belt, to rotate the main shaft in said one direction only, and (b) enables the electric motor to rotate the main shaft in said one direction at a speed which is higher than the contemporaneous speed of the pulley;(vi) a power supply for powering the electric motor; and,(vii) means for connecting and disconnecting the electric motor with the power supply as a function of whether the rotary motion speed of the pulley is lesser or greater than the contemporaneous speed of said main shaft, the means comprising either (a) a manual switch operated by a motor vehicle operator, or (b) a controller having a processor in combination with one or more sensors for generating signals to the processor responsive to either or both the speed of rotation of said pulley or the speed of rotation of one or more rotatable parts of said engine or of said transmission, or responsive to the amount of motive power being transmitted by said drivetrain to the wheels;said auxiliary apparatus mounted on said motor vehicle so that said rotary output shaft of the engine drives said pulley in said one direction by means of said endless belt;(b) moving the vehicle on a surface under motive power of the internal combustion engine transmitted to the wheels by the drive train, wherein said engine drives said endless belt to rotate thereby said pulley, and through said over-running clutch thereby rotates said main shaft of the motor, so said hydraulic pump and said vacuum pump thereby provide hydraulic pressure and vacuum respectively to said steering subsystem and said braking subsystem for operation of each thereof; and,while continuing to move the vehicle across said surface;(c) stopping said engine, so the vehicle slows in speed of movement across said surface;(d) then supplying electric power to said electric motor from said power supply, to rotate the armature and said main shaft with a rotational speed which is higher than the contemporaneous speed of said pulley and which is sufficient to cause said hydraulic pump to provide hydraulic pressure for operation of said steering subsystem and sufficient to cause said vacuum pump to provide vacuum for operation of said braking subsystem;(e) sensing the speed of movement of the vehicle across said surface by one or both means of manual operator activity or by means of said controller; and,(f) when speed of movement of the motor vehicle across said surface falls below a predetermined value, (i) stopping supply of power to the electric motor, and(ii) restarting said engine so the engine drives said endless belt, pulley, main shaft, hydraulic pump and vacuum pump sufficiently to provide hydraulic fluid pressure and vacuum respectively to said braking subsystem and said steering subsystem for operation thereof. 2. The method of claim 1 further comprising: repeating steps (c), (d), (e), and (f) a multiplicity of times. 3. The method of claim 1 wherein step (c) further comprises: disengaging the transmission, to stop the transmittal of motive power from the engine to the wheels of the vehicle. 4. A method of operating a wheeled motor vehicle comprising an internal combustion engine for moving the vehicle across a surface, the engine connected to the wheels of the vehicle by a drivetrain which includes a transmission for selectively transmitting motive power to the wheels; the engine comprising a rotary output shaft; the vehicle comprising at least one of a hydraulic pressure augmented steering subsystem and a vacuum power augmented brake subsystem; the vehicle the engine capable of being started and stopped; which method comprises: (a) moving the vehicle across a surface under motive power of the internal combustion engine transmitted to the wheels by the drive train, wherein said engine rotary output shaft is coupled to and directly or indirectly rotates the main shaft of an auxiliary apparatus mounted on said vehicle, said auxiliary apparatus comprising a main shaft, an electric motor having an armature connected to said main shaft, and at least a portion of at least one of (i) a hydraulic pump for providing hydraulic fluid pressure to said steering subsystem for operation thereof connected to said main shaft and (ii) a vacuum pump for providing vacuum to said brake subsystem for operation thereof connected to the main shaft; and,while continuing to move the vehicle across said surface,(b) stopping said engine, so the vehicle slows in speed of movement across said surface;(c) supplying electric power to said electric motor from said power supply, sufficient to rotate the armature and said main shaft with rotational speed which is speed sufficient to cause said at least one hydraulic pump or vacuum pump to provide either pressurized hydraulic fluid for operation of said steering subsystem or vacuum for operation of said brake subsystem;(d) sensing the speed of movement of the vehicle across said surface by one or both by means of manual operator activity or by means of a controller; and,(e) when speed of movement of the motor vehicle across said surface falls below a predetermined value, (i) stopping the supply of power to the electric motor, and(ii) restarting said engine so the engine drives said main shaft, and said at least one of a hydraulic pump and vacuum pump sufficiently to provide hydraulic fluid pressure or vacuum respectively to said steering subsystem or to said brake subsystem for operation thereof, and,(f) providing an electric motor housing, the hydraulic pump and the vacuum pump mounted on or integrated with the electric motor housing. 5. The method of claim 4 wherein the engine rotary output shaft rotates said main shaft by means of an over-running clutch, wherein the over-running clutch enables the electric motor to rotate the main shaft in one direction at a speed higher than the speed of said engine rotary output shaft.
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이 특허에 인용된 특허 (16)
Renfro Kenneth W. (Macon IL) Guhl Richard E. (Decatur IL), Automatic control circuit for an electrically powered hydraulic pump.
Simon ; Jr. Robert C. (Novi MI) Mitchell George C. (Ypsilanti MI) Tolkacz Joseph M. (Warren MI) Polom William G. (Mt. Clemens MI) Medich Peter M. (Birmingham MI), Engine coastdown control system.
Yamagishi Yoichiro (Atsugi JPX) Tanaka Yoshikazu (Atsugi JPX), Method and apparatus for controlling fuel supply shut off of an internal combustion engine.
DeVore, James H.; Allen, Jr., Charles E.; Sturmer, Winfried; Heinzelmann, Karl-Fritz; Ronge, Ludger; Dreier, Loren C.; Sayman, Robert A.; Muetzel, Ronald P.; AbuSamra, Muneer, Vehicle transmission system with coast controls.
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