公开(公告)号：US4840246A

公开(公告)日：1989-06-20

申请号：US651546

申请日：1984-09-17

申请人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakikiyama

发明人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakikiyama

IPC分类号： B60K17/34 ,  B60K17/344 ,  B60K23/08 ,  F16H37/06

CPC分类号： B60K23/08

摘要： A power transmission control system for a four-wheel drive vehicle powered by an engine has a transmission for transmitting the power of the engine to main driving wheels of the four-wheel drive vehicle, and a clutch for transmitting the power to auxiliary driving wheels. A hydraulic circuit for operating the clutch and a solenoid operated valve are provided for operating the clutch.Speed sensors are provided for detecting speeds of the main and auxiliary driving wheels in order to detect the slipping of wheels and vehicle speed.A steering angle is sensed for detecting a large steering angle. An electric circuit is provided to respond to the output of the speed sensors at slipping for engaging the clutch and to respond to large steering angle at low vehicle speed for disengaging the clutch for providing two-wheel driving.

摘要翻译： 用于由发动机驱动的四轮驱动车辆的动力传递控制系统具有用于将发动机的动力传递到四轮驱动车辆的主驱动轮的变速器和用于将动力传递到辅助驱动轮的离合器。 设置用于操作离合器的液压回路和电磁阀，用于操作离合器。 提供速度传感器用于检测主驱动轮和辅助驱动轮的速度，以便检测车轮的滑动和车速。 感测转向角以检测大的转向角。 提供电路以响应速度传感器的输出在滑动以接合离合器并且响应于在低车速下的大转向角度以分离用于提供两轮驱动的离合器。

公开(公告)号：US4617840A

公开(公告)日：1986-10-21

申请号：US561717

申请日：1983-12-15

申请人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

发明人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

IPC分类号： B60K23/08 ,  B60K41/02

CPC分类号： B60K23/08 ,  Y10T477/613 ,  Y10T477/647 ,  Y10T477/691 ,  Y10T74/19079

摘要： A system for controlling power transmission of a four-wheel drive vehicle powered by an engine. The vehicle is provided with a transmission for transmitting a power of the engine to main wheels and a clutch for selectively transmitting the power to auxiliary wheels. In order to detect sudden braking of the vehicle, a vehicle speed sensor and a control circuit for detecting deceleration of the vehicle greater than a predetermined value are provided, the control circuit producing an output signal. A switch is provided responsive to the output signal for engaging the clutch, whereby the four-wheel driving power transmission is established.

摘要翻译： 用于控制由发动机驱动的四轮驱动车辆的动力传递的系统。 车辆设置有用于将发动机的动力传递到主轮的变速器和用于选择性地将动力传递到辅助轮的离合器。 为了检测车辆的突然制动，提供车速传感器和用于检测大于预定值的车辆减速度的控制电路，该控制电路产生输出信号。 响应于用于接合离合器的输出信号提供开关，从而建立四轮驱动动力传递。

公开(公告)号：US4586583A

公开(公告)日：1986-05-06

申请号：US651545

申请日：1984-09-17

申请人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

发明人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

IPC分类号： B60K23/08

CPC分类号： B60K23/08 ,  B60W2540/16

摘要： A system for controlling a power transmission of a four-wheel drive vehicle powered by an engine has a transmission for transmitting the power of the engine to main driving wheels of the four-wheel drive vehicle, and a clutch for transmitting the power to auxiliary driving wheels. A hydraulic circuit and a solenoid operated valve are provided for operating the clutch.First sensors are provided for detecting the speed of the main and auxiliary driving wheels, respectively, and second sensors are provided for detecting depression of an accelerator pedal and depression of a brake pedal of the vehicle respectively. When a large difference between the speed of the wheels is detected, the clutch is engaged, and when a large acceleration and large deceleration dependent on the output of the first sensors are detected, the clutch is engaged for establishing the four-wheel drive.

摘要翻译： 用于控制由发动机供电的四轮驱动车辆的动力传递的系统具有用于将发动机的动力传递到四轮驱动车辆的主驱动轮的变速器，以及用于将动力传递到辅助驾驶的离合器 车轮。 设有液压回路和电磁阀，用于操作离合器。 第一传感器分别用于检测主驱动轮和辅助驱动轮的速度，第二传感器分别用于检测加速踏板的下压和车辆的制动踏板的下压。 当检测到车轮的速度之间的大的差异时，离合器接合，并且当检测到依赖于第一传感器的输出的大的加速度和大的减速度时，离合器接合以建立四轮驱动。

公开(公告)号：US4630704A

公开(公告)日：1986-12-23

申请号：US651557

申请日：1984-09-17

申请人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

发明人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

IPC分类号： B60K23/08

CPC分类号： B60K23/08 ,  B60W2550/142

摘要： A system for controlling a power transmission of a four-wheel drive vehicle powered by an engine has a transmission for transmitting the power of the engine to main driving wheels of the four-wheel drive vehicle, a hydraulically operated clutch for transmitting the power to auxiliary driving wheels, a hydraulic circuit for operating the clutch in accordance with driving conditions. The system comprises a sensor for detecting the inclination of roads and for producing an output signal dependent on the inclination, and a control circuit responsive to the output signal from the sensor for engaging the clutch when the output signal exceeds a predetermined value, thereby establishing the four-wheel drive.

摘要翻译： 用于控制由发动机驱动的四轮驱动车辆的动力传递的系统具有用于将发动机的动力传递到四轮驱动车辆的主驱动轮的变速器，用于将动力传递给辅助装置的液压离合器 驱动轮，用于根据驾驶条件操作离合器的液压回路。 该系统包括用于检测道路倾斜度和根据倾斜度产生输出信号的传感器，以及响应来自传感器的输出信号的控制电路，用于当输出信号超过预定值时接合离合器，从而建立 四轮驱动。

公开(公告)号：US4576061A

公开(公告)日：1986-03-18

申请号：US561719

申请日：1983-12-15

申请人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

发明人： Toru Yamakawa ,  Fujio Makita ,  Mitsuo Umezawa ,  Ryuzo Sakakiyama

IPC分类号： B60K23/08 ,  F16H37/06

CPC分类号： B60K23/08 ,  Y10T477/613 ,  Y10T74/19084

摘要： A system for controlling a power transmission of a four-wheel drive vehicle powered by an engine. The system is provided with a transmission for transmitting a power of the engine to main wheels, a clutch for selectively transmitting the power to auxiliary wheels, a vehicle speed sensor for sensing the speed of the vehicle and for producing a vehicle speed signal dependent on the speed, a steering angle sensor for sensing the steering angle of the vehicle and for producing a steering angle signal dependent on the steering angle. A control circuit is provided to compare the vehicle speed signal and steering angle signal with reference values and judge whether the condition is in the range of conditions causing tight corner braking and to produce a clutch signal. A switch is responsive to the clutch signal for disengaging the clutch, whereby the four-wheel drive is changed to the two-wheel drive.

摘要翻译： 一种用于控制由发动机驱动的四轮驱动车辆的动力传递的系统。 该系统设置有用于将发动机的动力传递到主轮的变速器，用于选择性地将动力传递到辅助车轮的离合器，用于感测车辆速度的车速传感器以及用于产生取决于车辆速度的车速信号 速度，用于感测车辆的转向角的转向角传感器，以及用于产生取决于转向角的转向角信号。 提供控制电路以将车速信号和转向角信号与参考值进行比较，并判断条件是否在导致紧弯角制动的条件范围内并产生离合器信号。 开关响应于离合器信号以分离离合器，由此将四轮驱动改变为两轮驱动。

公开(公告)号：US4499450A

公开(公告)日：1985-02-12

申请号：US350974

申请日：1982-02-22

申请人： Fujio Makita

发明人： Fujio Makita

IPC分类号： B60W10/00 ,  B60W10/02 ,  B60W10/04 ,  F16D37/02 ,  F16D43/00 ,  F16D48/06 ,  G08B21/00 ,  B60Q1/00

CPC分类号： F16D37/02 ,  F16D43/00 ,  F16D48/064 ,  F16D2037/001 ,  F16D2037/002 ,  F16D2500/1022 ,  F16D2500/10475 ,  F16D2500/30406 ,  F16D2500/30415 ,  F16D2500/30426 ,  F16D2500/3166 ,  F16D2500/50236 ,  F16D2500/5106 ,  F16D2500/7101 ,  F16D2500/7102

摘要： An electromagnetic clutch has a drive member secured to a crankshaft of an internal combustion engine, and a driven member adjacent to the drive member. The system comprises a circuit for detecting the difference between numbers of revolutions of the drive member and driven member, a comparator for producing an output when the difference is higher than a reference value, a timer operated by the output of the comparator, and a warning device such as a buzzer operated by the signal from the timer when a predetermined time elapses. Thus, when the clutch slips, the warning signal is generated. Further, a circuit for changing clutch engaging characteristics is provided to be operated by the output of the comparator for preventing the overheating of the clutch.

摘要翻译： 电磁离合器具有固定到内燃机的曲轴的驱动构件和与驱动构件相邻的从动构件。 该系统包括用于检测驱动构件和从动构件的转数之间的差的电路，当差高于参考值时产生输出的比较器，由比较器的输出操作的定时器和警告 装置，例如当经过预定时间时由定时器的信号操作的蜂鸣器。 因此，当离合器滑动时，产生警告信号。 此外，用于改变离合器接合特性的电路被提供以由比较器的输出来操作，用于防止离合器的过热。

公开(公告)号：US4502579A

公开(公告)日：1985-03-05

申请号：US350518

申请日：1982-02-19

申请人： Fujio Makita

发明人： Fujio Makita

IPC分类号： B60W10/02 ,  B60W10/04 ,  B60W10/06 ,  B60W10/10 ,  F16D37/02 ,  F16D43/00 ,  F16D48/06 ,  B60K41/28

CPC分类号： F16D37/02 ,  F16D43/00 ,  F16D48/064 ,  F16D2037/001 ,  F16D2037/002 ,  F16D2500/1022 ,  F16D2500/10412 ,  F16D2500/10475 ,  F16D2500/30415 ,  F16D2500/30426 ,  F16D2500/5106 ,  F16D2500/70418 ,  F16D2500/70668 ,  Y10T477/753 ,  Y10T477/76

摘要： A system for preventing the overheating of an electromagnetic clutch of an internal combustion engine mounted on a vehicle caused by slipping of the clutch for a considerably long time. The electromagnetic clutch has a drive member secured to a crankshaft of the internal combustion engine, a driven member adjacent to the drive member, and a magnetizing coil provided in one of said members. The heat quantity generated in the clutch is calculated by an operation circuit. A clutch current control circuit is provided such that when the heat quantity exceeds a predetermined value, the electromagnetic clutch is applied with a rated clutch current to engage the clutch without slipping for preventing overheating by the slipping.

摘要翻译： 一种用于防止由于离合器滑动相当长时间而安装在车辆上的内燃机的电磁离合器过热的系统。 电磁离合器具有固定到内燃机的曲轴的驱动构件，与驱动构件相邻的从动构件，以及设置在所述构件之一中的磁化线圈。 由离合器产生的热量由运算电路计算。 提供离合器电流控制电路，使得当热量超过预定值时，电磁离合器施加额定的离合器电流以接合离合器而不滑动以防止由于滑动而导致的过热。

公开(公告)号：US4567969A

公开(公告)日：1986-02-04

申请号：US524949

申请日：1983-08-22

申请人： Fujio Makita

发明人： Fujio Makita

IPC分类号： B60K23/02 ,  F16H3/089 ,  F16H59/02 ,  F16H59/04 ,  F16H61/28 ,  F16H61/32 ,  F16H61/34 ,  F16H63/00 ,  F16H63/04 ,  F16H63/20 ,  B60K41/22

CPC分类号： F16H61/32 ,  F16H59/044 ,  F16H2059/047 ,  F16H2061/2876 ,  F16H3/089 ,  F16H63/48 ,  Y10T74/19251 ,  Y10T74/19437 ,  Y10T74/2003 ,  Y10T74/20098

摘要： A gearshift system for an automobile with an electromagnetic powder clutch and a transmission having four forward-gear sets. The system comprises a first synchronizing device for selectively engaging a second speed gear and a fourth speed gear with an output shaft of the transmission, a second synchronizing device for selectively engaging a first speed gear and a third speed gear with the output shaft, a first shifter arm for operating the first synchronizing device, and a second shifter arm for operating the second synchronizing device. A select lever is provided to engage one of the first and second shifter arms. The select lever is operated by a manual shift lever for shifting one of the shifter arms. Further, the select lever is moved by an electric actuator so as to engage with one of the shifter arms for the selection of the synchronizing device. Switches are provided for producing signals representing a selection of one of the synchronizing device, and a thermo switch responsive to the temperature of the automatic clutch for producing an output signal when the temperature exceeds a predetermined temperature. A control circuit is responsive to the signals of the switches for operating the electric actuator to select one of the synchronizing devices, and responsive to the output signal of the thermo switch for operating the electric actuator to select the second synchronizing device.

摘要翻译： 一种用于具有电磁粉末离合器和具有四个前进齿轮组的变速器的汽车的换档系统。 该系统包括用于选择性地将第二速度齿轮和第四速度齿轮与变速器的输出轴接合的第一同步装置，用于选择性地将第一速度齿轮和第三速度齿轮与输出轴接合的第二同步装置，第一同步装置 用于操作第一同步装置的移位臂和用于操作第二同步装置的第二移位臂。 提供选择杆以接合第一和第二移位臂中的一个。 选择杆由手动变速杆操作，用于移动换档臂之一。 此外，选择杆由电致动器移动，以与用于选择同步装置的移位臂中的一个接合。 提供开关用于产​​生表示同步装置中的一个的选择的信号，以及响应于自动离合器的温度的热敏开关，用于当温度超过预定温度时产生输出信号。 控制电路响应于用于操作电致动器的开关的信号以选择同步装置中的一个，并且响应于热电开关的输出信号来操作电致动器以选择第二同步装置。

公开(公告)号：US4511014A

公开(公告)日：1985-04-16

申请号：US395188

申请日：1982-07-06

申请人： Fujio Makita

发明人： Fujio Makita

IPC分类号： B60K23/08 ,  B60Q1/00 ,  B60K31/00

CPC分类号： B60K23/08

摘要： A system for a four-wheel drive vehicle for automatically changing a power transmission of the engine of the vehicle from two-wheel drive system to four-wheel drive system in accordance with road surface condition and driving condition. The transmission system is provided for transmitting a power from the engine to two main driving wheels, and a clutch is provided for transmitting the power of the engine to drive two other wheels. Speed sensors are provided for producing output signals dependent on speeds of the four wheels, respectively. A steering-angle sensor is provided for producing an output signal dependent on the steering-angle. Computation circuits are provided to compute an actual slip rate from the output signals of the speed sensors and to compute a theoretical slip rate from the output of the steering-angle sensor. A comparing circuit compares the actual slip rate and the theoretical slip rate with each other and produces an output signal for a set time when the difference between both slip rates exceeds a predetermined level. The output signal operates the clutch for the engagement thereof for establishing the four-wheel drive system.

摘要翻译： 一种用于四轮驱动车辆的系统，用于根据路面状况和驾驶状况自动地将车辆的发动机的动力传递从两轮驱动系统改变为四轮驱动系统。 传动系统被设置用于将动力从发动机传递到两个主驱动轮，并且提供离合器用于传递发动机的动力以驱动两个其它车轮。 速度传感器分别用于产生依赖于四个车轮速度的输出信号。 提供转向角传感器用于产生取决于转向角的输出信号。 提供计算电路以从速度传感器的输出信号计算实际滑差率，并从转向角传感器的输出计算理论滑移率。 比较电路将实际滑移率和理论滑移率相互比较，并且当两个滑移率之间的差超过预定水平时，产生一个设定时间的输出信号。 输出信号操作离合器以进行啮合以建立四轮驱动系统。

公开(公告)号：US4470489A

公开(公告)日：1984-09-11

申请号：US399513

申请日：1982-07-19

申请人： Fujio Makita

发明人： Fujio Makita

IPC分类号： B60K17/348 ,  B60K17/34 ,  B60K23/08 ,  F16D48/06 ,  B60K41/02 ,  F16D25/12 ,  F16D43/20

CPC分类号： B60K23/0808 ,  B60K17/34 ,  F16D48/066 ,  F16D2048/0272 ,  F16D2500/10431 ,  F16D2500/1045 ,  F16D2500/3021 ,  F16D2500/70241 ,  F16D2500/70406 ,  F16D2500/70426 ,  Y10T477/613 ,  Y10T477/75

摘要： A system for a four-wheel drive vehicle for automatically changing a power transmission system of the engine of the vehicle from four-wheel driving system to two-wheel driving system in accordance with the steering angle during the turning of a corner. The transmission system is provided for transmitting a power from the engine to main driving two-wheel, and a fluid pressure controlled friction clutch is provided for transmitting the power of the engine to two wheels other than the main driving two-wheel. A steering angle sensor is provided for producing a steering angle signal dependent on the steering angle. A control system is provided to respond to the steering angle signal for decreasing the pressure of the pressure oil applied to the clutch thereby to cause the slip of the clutch during the turning of the corner.

摘要翻译： 一种用于四轮驱动车辆的系统，用于根据转弯期间的转向角度，将车辆的发动机的动力传递系统从四轮驱动系统自动改变为两轮驱动系统。 传动系统用于将发动机的功率从发动机传递到主驱动二轮，并且设置流体压力控制的摩擦离合器，用于将发动机的动力传递到主驱动两轮以外的两个车轮。 提供转向角传感器，用于产生取决于转向角的转向角信号。 提供控制系统以响应转向角信号以减小施加到离合器的压力油的压力，从而在拐角转动期间导致离合器的滑动。