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公开(公告)号：US4941319A
公开(公告)日：1990-07-17
申请号：US251593
申请日：1988-09-29
CPC分类号： F02D13/0284 , F02B27/06 , F01N1/16 , Y02T10/146 , Y02T10/18
摘要： An engine controller is linked to and controls simultaneously both an exhaust control valve and an on-off valves or changeover valves or a reflector in the exhaust pipe to improve engine performance. The controller positions the exhaust control valve and on-off valves or changeover valves, or reflector based upon detected engine speed and throttle position.
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公开(公告)号：US4793347A
公开(公告)日：1988-12-27
申请号：US8524
申请日：1987-01-29
CPC分类号： F02D13/0284 , F02D41/00 , F02B2075/025 , F02D2400/04 , Y02T10/18
摘要： An exhaust timing controller for controlling an exhaust timing member in a two cycle engine including a control circuit for generating a control signal which actuates a mechanism for moving the exhaust timing member. The control circuit controls the member such that the member is drivable in a range from a fully open position to a fully closed position responsive to certain engine conditions including engine speed and rate of change of engine speed. A self cleaning cycle is provided which drives the exhaust timing member first to one position limit and then to the other.
摘要翻译： 一种用于控制两循环发动机中的排气定时构件的排气正时控制器，包括用于产生控制信号的控制电路，该控制信号致动用于移动排气定时构件的机构。 所述控制电路控制所述构件，使得所述构件能够响应于包括发动机转速和发动机转速变化率在内的某些发动机状态而从完全打开位置到完全关闭位置的范围内被驱动。 提供了自动清洁循环，其将排气定时构件首先驱动到一个位置限制，然后另一个。
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公开(公告)号：US4807571A
公开(公告)日：1989-02-28
申请号：US85673
申请日：1987-08-13
申请人： Hitoshi Yamamoto , Takumi Tottori , Tsugio Ikeda , Kouji Okazaki
发明人： Hitoshi Yamamoto , Takumi Tottori , Tsugio Ikeda , Kouji Okazaki
CPC分类号： F02D13/0284 , F02B2075/025 , Y02T10/18
摘要： An exhaust timing control apparatus for two-cycle engines of the type having one or more exhaust ports extending outwardly from the cylinder. A valve body is pivotally mounted within the exhaust passage in a recess specifically provided therefore. The valve has a control surface approaching the cylinder to define an apparent upper timing edge of the exhaust port. Holes are provided through the valve body for flow to operate to inhibit the build up of carbon deposits which often inhibit the operation of the valve. An inclined surface may be formed on the surface of the valve body to facilitate the removal of carbon. Edges may also be provided on the valve body which cooperate with the walls of the recess in the exhaust passage to knock off carbon build up such that it might be conveyed through the exhaust pipe and from the system.
摘要翻译： 一种用于具有从气缸向外延伸的一个或多个排气口的类型的两冲程发动机的排气正时控制装置。 因此，阀主体可枢转地安装在排气通道内，因此具体设置在凹部内。 阀具有接近气缸的控制表面，以限定排气口的明显上限时间边缘。 通过阀体提供孔以用于流动以操作以抑制通常抑制阀的操作的碳沉积物的积聚。 可以在阀体的表面上形成倾斜表面以便于除去碳。 也可以在阀体上设置边缘，该阀体与排气通道中的凹槽的壁配合以将碳积聚起来，从而可以通过排气管和系统输送。
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公开(公告)号：US5474146A
公开(公告)日：1995-12-12
申请号：US24830
申请日：1993-03-01
申请人： Toshiharu Yoshioka , Takashi Ohzeki , Hideaki Suzuki , Takumi Tottori , Munehito Nakamura , Mamoru Matsui , Michio Ohkubo , Kanau Iwashita
发明人： Toshiharu Yoshioka , Takashi Ohzeki , Hideaki Suzuki , Takumi Tottori , Munehito Nakamura , Mamoru Matsui , Michio Ohkubo , Kanau Iwashita
CPC分类号： B62M27/02 , B62K13/00 , B62M2027/021
摘要： A snow vehicle of the saddle-riding type utilizes essentially the same upper structure as a motorcycle but mounts a ski on the front fork for steering and an engine-driven endless belt track assembly for powering the device. The endless belt track assembly is arranged for mounting on a rear arm structure in order to maintain surface contact between the endless belt and the snow and thereby improve the operating efficiency of the vehicle. The arm may be pivotally mounted or integral with a rear fork pivotally mounted to the vehicle. An improved endless belt construction is described in which the belt is strengthened by core members and the driving cogs of particular configuration and disposed at prescribed locations with respect to the propelling lugs in order to maintain surface contact between the belt edge and the snow surface during cornering. Also disclosed are various forms of cover structures for the track assembly that prevent the scattering of snow from the belt onto the rider or vehicle parts. Grab rails attached to the rear swing arm elements facilitate manipulation of the vehicle in confined spaces. A stopper belt adjustment is also shown mounted to a rear fork with the stopper belt extruding to an articulated rear swing arm structure. The adjustment accommodates for adjustments to the drive chain for tensioning.
摘要翻译： 骑马式的雪车采用与摩托车基本上相同的上部结构，但是在用于转向的前叉上安装滑雪板以及用于为设备供电的发动机驱动的环形带轨道组件。 环形带轨道组件布置成安装在后臂结构上，以便保持环形带和雪之间的表面接触，从而提高车辆的操作效率。 臂可以枢转地安装或与枢转地安装到车辆的后叉形成一体。 描述了一种改进的环形带结构，其中通过铁芯构件和特定构造的驱动齿轮来加强带，并相对于推进凸耳设置在规定位置，以便在转弯期间保持带边缘和雪面之间的表面接触 。 还公开了用于轨道组件的各种形式的覆盖结构，其防止雪从皮带上散落到骑车人或车辆部件上。 连接到后摆臂元件的扶手有利于在密闭空间中操纵车辆。 止挡带调节装置还被安装到后叉上，止动带挤压到铰接的后摆臂结构。 该调整可适应用于张紧的驱动链条的调整。
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公开(公告)号：US4714056A
公开(公告)日：1987-12-22
申请号：US760306
申请日：1985-07-29
申请人： Takumi Tottori , Kenji Oki , Kazuo Ooyama , Toshio Mizushima
发明人： Takumi Tottori , Kenji Oki , Kazuo Ooyama , Toshio Mizushima
CPC分类号： F02B27/06 , F02B2075/025 , Y02T10/146
摘要： A two-cycle engine includes a cylinder block having at least one pair of first and second cylinders, the first and second cylinders having a pair of first and second exhaust ports, respectively. A pair of first and second pistons are received respectively in the first and second cylinders for reciprocal movement therealong, each of the exhaust ports being selectively closed and opened by a respective one of the pistons during the movement thereof along a respective one of the cylinders. The first and second pistons are operatively connected to a crankshaft in such a manner that the first and second pistons are reciprocable 180.degree. out of phase along the respective cylinders. A final portion of the duration of opening of one of the exhaust ports overlaps an initial portion of the duration of opening of the other. An exhaust passage has a communicating portion communicating the first and second exhaust ports with each other adjacent thereto.
摘要翻译： 双冲程发动机包括具有至少一对第一和第二气缸的气缸体，第一和第二气缸分别具有一对第一和第二排气口。 一对第一和第二活塞分别容纳在第一和第二气缸中，用于在其上往复运动，每个排气口在相应的一个活塞的运动期间由相应的一个活塞选择性地关闭和打开。 第一和第二活塞以这样的方式可操作地连接到曲轴，使得第一和第二活塞沿相应的气缸往复运动180°异相。 一个排气口的打开持续时间的最后部分与另一个排气口的打开持续时间的初始部分重叠。 排气通道具有使第一和第二排气口彼此相邻连通的连通部。
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公开(公告)号：US4539813A
公开(公告)日：1985-09-10
申请号：US484883
申请日：1983-04-14
申请人： Takao Tomita , Takumi Tottori , Yasuo Terada , Hideki Toyota , Masahiro Akiba
发明人： Takao Tomita , Takumi Tottori , Yasuo Terada , Hideki Toyota , Masahiro Akiba
CPC分类号： F02B61/02 , F02B27/06 , F02B75/16 , F03G7/08 , F02B2075/025 , Y02T10/146
摘要： An exhaust system control apparatus for the exhaust of an internal combustion engine which is particularly useful on two-cycle engines. The exhaust system includes a subsidiary chamber connected to the normal engine exhaust passage with a valve for opening and closing communication between the chamber and exhaust passage to change the pressure wave at the engine cylinder exhaust port to provide optimum performance at high and low speeds. The chamber valve is operated rapidly by a pneumatic actuator supplied with compressed air from one or more of the sources disclosed, namely, a belt driven or electric air compressor and piston and cylinder devices extending between or forming the suspension components of a two wheeled vehicle. A pneumatic valve is operated by engine speed sensing means to supply or release the pressurized air to the actuator at a predetermined engine speed.
摘要翻译： 一种用于排气的排气系统控制装置，其特别适用于双循环发动机。 排气系统包括连接到普通发动机排气通道的辅助室，其具有用于打开和关闭室和排气通道之间的连通的阀，以改变发动机气缸排气口处的压力波，以在高速和低速下提供最佳性能。 腔室阀由一个供应压缩空气的气动致动器快速操作，所述压缩空气来自一个或多个所公开的源，即皮带驱动或电动空气压缩机以及在二轮车辆的悬架部件之间延伸或形成两轮车辆的悬架部件之间的活塞和气缸装置。 发动机速度检测装置操作气动阀，以预定的发动机速度将加压空气供给或释放到致动器。
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