公开(公告)号：JPS6473158A

公开(公告)日：1989-03-17

申请号：JP23080787

申请日：1987-09-14

Applicant: TOYOTA MOTOR CORP

Inventor： SHIBATA YOSHIAKI ,  OKAMOTO AKIO

IPC: F02D41/14 ,  F02D19/02 ,  F02D41/00 ,  F02M21/02

Abstract: PURPOSE:To prevent overrichness of an engine during a transition period by controlling an air-fuel ratio of a carburetor to the lean side and feedback- controlling a jet amount of a fuel jet valve by means of an O2 sensor when a specified operation condition of an LPG engine is detected. CONSTITUTION:An air-fuel ratio of a mixture to be supplied to an engine M1 is controlled to be a specified value by means of a fuel mixing means (carburetor) provided in the Venturi M3 of an intake passage M2 and a fuel jet valve M5 provided on the downstream side from the carburator M4. When an operation condition detecting means M6 detects that the condition is in a specified load area, an air-fuel control means M9 controls the air-fuel ratio of the carburetor M4 to the lean side, while a jet amount of a fuel jet valve is feedback- controlled by use of a signal of an O2 sensor M8 such that the air-fuel ratio of the supplied mixture is a theoretical air-fuel ratio.

公开(公告)号：JPS6270633A

公开(公告)日：1987-04-01

申请号：JP20878185

申请日：1985-09-24

Applicant: TOYOTA MOTOR CORP

Inventor： UMEHANA TOYOICHI ,  SHIBATA YOSHIAKI ,  ONAKA HIDEMI ,  HORII KINGO

IPC: F02D15/04 ,  F02D23/00

Abstract: PURPOSE:To reduce fuel consumption and improve an output, by a method wherein a varying compression ratio device is mounted to a mechanical super charge engine, during operation of a supercharger, a compression ratio is re duced over that prevailing during inoperative state, and a compression ratio is changed depending upon the presence of the occurrence of knocking. CONSTITUTION:A mechanical supercharger 3 rotated in linkage with a crank 4 is mounted in a suction passage 2 through a belt 5, and a bypass passage 6, which runs around the supercharger 3 and in which a bypass valve 7 is located, is provided. Meanwhile, a compression ratio varying device 10 is placed in an engine 1 in a manner to face on a combustion chamber 9, and is so constituted as to drive a piston 11 for varying volume with the aid of a servo motor 12. When the compression ratio varying device 10 is controlled by a control computer 13, a servo motor 12 is controlled so that the supercharger 3 is turned ON when an engine load is increased to higher than a given value, and a compressed pressure is reduced in a state in that the bypass valve 7 is closed. Thereafter, a compression ratio is varied depending upon the presence of the occurrence of knocking.

公开(公告)号：JPS61129430A

公开(公告)日：1986-06-17

申请号：JP25039684

申请日：1984-11-29

Applicant: Toyota Motor Corp

Inventor： SHIBATA YOSHIAKI ,  ONAKA HIDEMI

IPC: F02D23/00 ,  F02D29/00 ,  F02D41/00 ,  F02D41/16 ,  F02M3/07

CPC classification number: F02M3/075

Abstract: PURPOSE:To prevent an engine stop, by changing the opening of an idling speed control valve for a speed changer when it is placed in an N range and a D range, in the case of a control device which provides a bypass passage, bypassing a throttle valve and a mechanical supercharger interposed in an intake passage, and arranges the idling speed control valve in said bypass passage. CONSTITUTION:An intake passage 14, providing inside successively a throttle valve 9 and an engine driven mechanical supercharger 10, connects a bypass passage 15 so as to detour around the both valve 9 and supercharger 10. A control device, arranging an idling speed control valve 6 in the bypass passage 15, holds an idling speed to a predetermined value by controlling the valve 16. The above device, providing a deceleration detecting means 23 and a range detecting means 24, inputs a detection signal of these means to a driving control means 25 of the valve 16. And the device controls the valve 16 to be set to the first valve opening position when an engine is in deceleration operation with an automatic speed changer 13 in a neutral range while to be set to the second valve opening position, where the opening is smaller than that in the first valve opening position, with the automatic speed changer in a drive range.

Abstract translation: 目的：为了防止发动机停机，通过改变变速器的空转速度控制阀在N档和D档范围内的开度时，在提供旁通通道的控制装置的情况下，绕过一个 节流阀和插入在进气通道中的机械增压器，并且将怠速控制阀布置在所述旁通通道中。 构成：连续提供节流阀9和发动机驱动的机械增压器10的进气通道14连接旁路通道15，以便围绕阀9和增压器10绕行。一种控制装置，设置空转速度控制阀 在旁路通路15中，通过控制阀16将空转速度保持在规定值。上述装置，设有减速检测单元23和范围检测单元24，将这些单元的检测信号输入到驱动控制单元 25，并且当发动机在自动变速器13处于空档范围的同时在减速运行时将阀16设定为第一阀打开位置，同时设定为第二阀打开位置， 其中开口小于第一阀打开位置，其中自动变速器处于驱动范围。

公开(公告)号：JPS6119933A

公开(公告)日：1986-01-28

申请号：JP13899884

申请日：1984-07-06

Applicant: Toyota Motor Corp

Inventor： OONAKA HIDEMI ,  UMEHANA TOYOICHI ,  SHIBATA YOSHIAKI ,  HORII KINGO ,  SATOU YASUSHI

IPC: F02B33/00 ,  F02B39/12

CPC classification number: F02B39/12

Abstract: PURPOSE:To promote the warm-up of an engine, by changing a set operating condition in which the change-over between the engagement and disengagement of a clutch operating means is effected, so that a low temperature supercharging range is enlarged. CONSTITUTION:An operating condition detecting means 6 detects the amount Q of intake-air and the rotational speed N of an engine. A temperature detecting means 8 detects the temperature of an engine 1, and a set value changing means 9 changes a selected temperature at which a clutch 5 is changed over from its engagement condition to its disengagement condition so that the low temperature supercharging range may be enlarged. Namely, upon low temperature operation, the superchager 3 is started to operate at a low speed in comparison with that upon normal operation.

Abstract translation: 目的：为了促进发动机的预热，通过改变实现离合器操作装置的接合和分离之间的转换的设定操作状态，从而扩大了低温增压范围。 构成：操作条件检测装置6检测发动机的进气量Q和转速N. 温度检测装置8检测发动机1的温度，并且设定值改变装置9将离合器5从其接合状态转换到的选定温度改变到其分离状态，使得低温增压范围可以被扩大 。 也就是说，在低温运转时，与正常运转相比，超级运转机3开始低速运转。

公开(公告)号：JPS59165813A

公开(公告)日：1984-09-19

申请号：JP3905983

申请日：1983-03-11

Applicant: Toyota Motor Corp

Inventor： NAKAMURA NORIHIKO ,  UMEHANA TOYOICHI ,  SHIBATA YOSHIAKI

IPC: F01L1/34 ,  F02D13/02

CPC classification number: F01L1/34 ,  F01L2201/00 ,  F02D2041/001

Abstract: PURPOSE:To switch the valve timing at earlier period when the variation rate is large, by varying the standard value of the parameter in the case when the valve timing is switched, according to the variation rate of the parameter. CONSTITUTION:The parameters such as the number of revolution are detected by an operation condition parameter detecting means C. In a memory means D, the operation condition of an engine, with each set values of the parameters such as load and number of revolution as boundary, is memorized. A timing controlling means E calculates the timing condition to be controlled on the basis of the detected signal, and in that case, a correcting means F corrects the standard value on which the timing is switched from a certain value to another value according to the number of revolution or the magnitude of the variation rate of other parameter. The signal for determining the timing to be set is transmitted to a control means B by a driving means G.

Abstract translation: 目的：根据变化率变化率，通过改变阀门定时切换时参数的标准值，在较早的时期切换阀门正时。 构成：由操作条件参数检测装置C检测诸如转数的参数。在存储装置D中，将发动机的操作状态与诸如负载和转数之类的参数的每个设定值作为边界 ，被记住了。 定时控制装置E基于检测信号计算要控制的定时条件，在这种情况下，校正装置F根据数量将从定时切换的标准值校正为另一值 的革命或其他参数的变化幅度的大小。 用于确定要设置的定时的信号通过驱动装置G发送到控制装置B.

公开(公告)号：JPS59113227A

公开(公告)日：1984-06-29

申请号：JP22209082

申请日：1982-12-20

Applicant: Toyota Motor Corp

Inventor： NAKAMURA NORIHIKO ,  UMEHANA TOYOICHI ,  SHIBATA YOSHIAKI

IPC: F01L1/34 ,  F01L1/344

CPC classification number: F01L1/34406

Abstract: PURPOSE:To prevent malfunctioning of a means for controlling the valve timing by the rotation of a step motor at the time of starting an engine, by employing such an arrangement that control of the valve timing is started when the engine speed becomes higher than a prescribed value after starting of the engine. CONSTITUTION:An inner sleeve 36 on the side of a cam shaft 18 and an outer sleeve 38 on the side of a timing pulley 28 are respectively formed with slits 40, 42, and roller bearings 44, 46 are moved in the slits 40, 42 by a step motor 50 for controlling the valve timing. When an engine is stopped, initial setting of the valve timing to a fixed timing is effected for the next starting of the engine. When the engine is started and the engine speed becomes higher than a prescribed value, control of the valve timing is started. Therefore, it is enabled to prevent malfunctioning of a valve timing controlling apparatus due to increase of the battery load caused at the time of starting the engine.

Abstract translation: 目的：为了防止在启动发动机时通过步进电机的旋转来控制气门正时的装置发生故障，通过采用这样一种布置，即当发动机转速高于规定值时开始控制气门正时 发动机启动后的值。 构成：在凸轮轴18侧的内套筒36和同步皮带轮28一侧的外套筒38分别形成有狭缝40,42，并且滚子轴承44,46在狭缝40,42中移动 通过用于控制气门正时的步进电动机50。 当发动机停止时，对发动机的下次启动进行气门正时的初始设定到固定的定时。 当发动机启动并且发动机转速变得高于规定值时，开始控制气门正时。 因此，能够防止由于起动发动机时引起的电池负载的增加而导致气门正时控制装置发生故障。

公开(公告)号：JPS59113225A

公开(公告)日：1984-06-29

申请号：JP22208882

申请日：1982-12-20

Applicant: Toyota Motor Corp

Inventor： NAKAMURA NORIHIKO ,  UMEHANA TOYOICHI ,  SHIBATA YOSHIAKI

IPC: F01L1/34 ,  F01L1/344

CPC classification number: F01L1/34406

Abstract: PURPOSE:To prevent deviation of the valve timing due to the force applied from a cam, by fixing a motor by a hold signal after rotation of the motor is completed in an apparatus for controlling the valve timing by the rotation of a step motor. CONSTITUTION:An inner sleeve 36 on the side of a cam shaft 18 and an outer sleeve 38 on the side of a timing pulley 28 are respectively formed with slits 40, 42, and roller bearings 44, 46 are moved in the slits 40, 42 by a step motor 50 for controlling the valve timing. Signals relating to the pressure in an intake pipe, the water temperature, the engine speed, etc. are applied to a control circuit, which controls the valve timing to render the actually measured valve timing equal to an aimed valve timing stored in its memory. When the deviation between the actual value and the aimed value becomes zero, hold signals are supplied to the step motor 50 at prescribed intervals for fixing the motor, whereby it is enabled to prevent deviation of the valve timing even if turning force is applied from a cam.

Abstract translation: 目的：为了防止由于凸轮施加的力引起的气门正时偏差，在通过步进电动机的旋转控制气门正时的装置中完成电动机旋转之后通过保持信号固定电机。 构成：在凸轮轴18侧的内套筒36和同步皮带轮28一侧的外套筒38分别形成有狭缝40,42，并且滚子轴承44,46在狭缝40,42中移动 通过用于控制气门正时的步进电动机50。 与进气管中的压力，水温，发动机转速等有关的信号被施加到控制电路，该控制电路控制气门正时，使实际测量的气门正时等于存储在其存储器中的目标气门正时。 当实际值和目标值之间的偏差为零时，保持信号以规定的间隔被提供给步进电动机50，用于固定电动机，由此即使从...中施加转动力也能够防止气门正时的偏差 凸轮。

公开(公告)号：JPS59113224A

公开(公告)日：1984-06-29

申请号：JP22208782

申请日：1982-12-20

Applicant: Toyota Motor Corp

Inventor： NAKAMURA NORIHIKO ,  UMEHANA TOYOICHI ,  SHIBATA YOSHIAKI

IPC: F01L1/34 ,  F01L1/344

CPC classification number: F01L1/34406

Abstract: PURPOSE:To increase the durability of an apparatus for controlling the valve timing by the rotation of a step motor, by decreasing the speed of a moving member when the valve timing is varied toward its critical position, and thereby moderating the shock caused when the moving member collides onto stoppers. CONSTITUTION:An inner sleeve 36 on the side of a cam shaft 18 and an outer sleeve 38 on the side of a timing pulley 28 are respectively formed with slits 40, 42, and the valve timing is controlled by moving roller bearings 44, 46 in the slits 40, 42 by a step motor 50. Signals relating to the pressure in an intake pipe, the water temperature, the engine speed, etc. are applied to a control circuit, which controls the valve timing to render the actually measured value equal to an aimed value stored in its memory. When a moving member carrying the roller bearings is moving toward the right and left limit positions, the speed of the moving member is decreased by decreasing the pulse feeding speed so as to moderate the shock caused when the moving member collides onto stoppers.

Abstract translation: 目的：为了通过步进电机的旋转来提高用于控制气门正时的装置的耐久性，通过当气门正时朝向其临界位置变化时减小移动构件的速度，从而缓和移动时引起的冲击 会员碰到塞子。 构成：在凸轮轴18侧的内套筒36和同步皮带轮28一侧的外套筒38分别形成有狭缝40,42，并且通过使滚子轴承44,46的移动来控制气门正时 狭缝40,42由步进电动机50.与进气管中的压力，水温，发动机转速等相关的信号被施加到控制电路，控制电路正时使实际测量值等于 到存储在其内存中的目标值。 当承载滚子轴承的移动部件朝向左右极限位置移动时，通过降低脉冲进给速度来减小移动部件的速度，以便缓和移动部件碰撞到止动件时引起的冲击。

公开(公告)号：JPS59110817A

公开(公告)日：1984-06-26

申请号：JP22032682

申请日：1982-12-17

Applicant: Toyota Motor Corp

Inventor： NAKAMURA NORIHIKO ,  UMEHANA TOYOICHI ,  SHIBATA YOSHIAKI

IPC: F01L1/34 ,  F01L1/344 ,  F02D13/02

CPC classification number: F01L1/34406

Abstract: PURPOSE:To enable more precious multistage control of valve timing, by a method wherein a sensor, which performs actual measurement of one reference value of valve timing, is mounted, and valve timing based on software is corrected each time the sensor is turned ON. CONSTITUTION:When a step motor 50, acting as a driving member for varying valve timing, is run, a nut 52, screwed on a rotary shaft 50' fabricated with an external thread, is moved in a direction A or B, roller bearings 44 and 46, located on a moving body 48 and formed integrally with the nut 52, are moved in the same direction within slits 40 and 42 which intersect each other. This causes outer and inner sleeves 36 and 38 to be relatively rotated, and the phase of a cam shaft 18 to a timing sleeve 28 is varied. In which case, a valve timing based on software is corrected each time a limit switch 90 for actually measuring one reference value of valve timing is turned ON, and according to such corrected timing, a step motor 50 is controlled.

Abstract translation: 目的：通过安装执行气门正时的一个参考值的实际测量的传感器，能够更加珍贵地进行气门正时的多级控制，并且每当传感器接通时校正基于软件的气门正时。 构成：当作为用于改变气门正时的驱动构件的步进电动机50运行时，旋拧在用外螺纹制造的旋转轴50'上的螺母52沿方向A或B移动，滚子轴承44 46与位于螺母52一体形成的移动体48上，在彼此相交的狭缝40,42内沿同一方向移动。 这使得外套筒36和内套筒38相对旋转，并且凸轮轴18相对于定时套筒28的相位是变化的。 在这种情况下，每当用于实际测量气门正时的一个参考值的限位开关90被接通时，基于软件的气门正时被校正，并且根据这种校正的定时，控制步进电动机50。

公开(公告)号：JPS58185915A

公开(公告)日：1983-10-29

申请号：JP6875582

申请日：1982-04-26

Applicant: Toyota Motor Corp

Inventor： NAKAMURA NORIHIKO ,  UMEHANA TOYOICHI ,  SHIBATA YOSHIAKI

IPC: F01L1/34 ,  F02D13/02

CPC classification number: F02D13/02 ,  Y02T10/18

Abstract: PURPOSE:To restrain a change-over shock in a means which changes over a valve timing by relatively revolving cam shaft side and crankshaft side sleeves by means of a slider by providing a movement limit detection means of the slider to control a driving motor. CONSTITUTION:When revolution of an output shaft 22 which is driven by a motor 21 is converted into linear motion of driving sleeve 23 by the operation of a screwed part 22A, a slider 17 is reciprocated laterally and this motion is transmitted via a shaft 15 to bearings 15 and 16 which are engaged in slits 13 and 14 on sleeves 6 and 10 formed in mutually crossing shape. Phases of a cam shaft B and a crankshaft which is connected for interlocking with a timing gear C are thereby varied to change a valve timing in two conditions. Position detecting sensors 50 and 52 which detect a limit position of the slider 17 when the valve timing is changed over are provided in an annular guide 25 and the motor 21 is controlled in accordance with outputs of those sensors 50 and 52.

Abstract translation: 目的：通过提供滑块的移动极限检测装置来控制驱动电机，通过滑块通过相对旋转的凸轮轴侧和曲轴侧套筒来限制在阀正时改变的装置中的转换冲击。 构成：当由电动机21驱动的输出轴22的转动通过螺纹部22A的操作转换成驱动套筒23的直线运动时，滑块17横向往复运动，并且该运动通过轴15传递到 轴承15和16，它们以相互交叉的形状形成在套筒6和10上的狭缝13和14中。 因此，连接用于与正时齿轮C联锁的凸轮轴B和曲轴的相位变化，以在两个条件下改变气门正时。 当在气门正时切换时检测滑块17的极限位置的位置检测传感器50和52设置在环形引导件25中，并且根据这些传感器50和52的输出来控制马达21。