-
公开(公告)号：US4878461A
公开(公告)日：1989-11-07
申请号：US213651
申请日：1988-06-30
CPC分类号： F02B75/22 , F01L1/02 , F01L1/022 , F01L1/024 , F01L1/348 , F02B2275/08 , Y10S474/90
摘要： A variable camshaft timing system for an internal combustion engine varies the relative angular position between the intake camshaft and the exhaust camshaft by controlling the path of the timing belt means. A first belt means is interconnected at one end of the engine between the crankshaft and the exhaust camshaft. At the other end of the engine the intake camshaft and the exhaust camshaft are connected by a second belt means for rotating the intake camshaft from the rotational drive supplied via exhaust camshaft. Idler arms are positioned for controlling the path and tension in the second belt means for varying the timing of the intake camshaft relative to the exhaust camshaft. A motor means operates to position the idler arms through a positioning cam means. The motor is controlled from an electronic control unit which receives signals indicating the engine operating characteristics and through a look-up table steps the positioning cam means to pivot the idler arms to rotate the intake camshaft relative to the exhaust camshaft thereby changing the intake valve timing.
摘要翻译： 用于内燃机的可变凸轮轴定时系统通过控制同步带装置的路径来改变进气凸轮轴和排气凸轮轴之间的相对角位置。 第一皮带装置在发动机的一端在曲轴和排气凸轮轴之间互连。 在发动机的另一端，进气凸轮轴和排气凸轮轴通过用于使进气凸轮轴从经由排气凸轮轴供给的旋转驱动旋转的第二带装置连接。 惰轮臂定位成用于控制第二带装置中的路径和张力，用于改变进气凸轮轴相对于排气凸轮轴的正时。 马达装置用于将惰轮定位在定位凸轮装置上。 电动机由电子控制单元控制，该电子控制单元接收指示发动机工作特性的信号，并且通过查找表将定位凸轮装置逐步转动以使转动臂枢转以使进气凸轮轴相对于排气凸轮轴旋转，由此改变进气门正时 。
-
公开(公告)号：US4872426A
公开(公告)日：1989-10-10
申请号：US181867
申请日：1988-04-15
CPC分类号： F02B75/22 , F01L1/348 , Y10S474/90
摘要： A variable camshaft timing system for an internal combustion engine varies the relative angular position between the intake camshaft and the exhaust camshaft by controlling the path of the timing belt. First and second idler arms, each having an idler wheel connected thereto, are independently pivoted around a common pivot point by means of a pair of positioning cams operatively connected to an electric stepping motor. The motor is controlled from an electronic control unit which receives signals indicating the engine operating characteristics and through a look-up table steps the positioning cams which in turn pivots the idler arms to rotate the intake camshaft relative to the exhaust camshaft thereby changing the intake valve timing.
摘要翻译： 用于内燃机的可变凸轮轴定时系统通过控制同步带的路径来改变进气凸轮轴和排气凸轮轴之间的相对角位置。 第一和第二空转臂各自具有连接到其上的惰轮，通过可操作地连接到电动步进电机的一对定位凸轮独立地围绕公共枢转点枢转。 电动机由电子控制单元控制，该电子控制单元接收指示发动机操作特性的信号，并且通过查找表对定位凸轮进行步进，定位凸轮又使惰轮枢转，以使进气凸轮轴相对于排气凸轮轴旋转，从而改变进气门 定时。
-
公开(公告)号：US4744338A
公开(公告)日：1988-05-17
申请号：US17670
申请日：1987-02-24
CPC分类号： F02B75/22 , F01L1/348 , Y10S474/90
摘要： A variable camshaft timing system for an internal combustion engine varies the relative angular position between the intake camshaft and the exhaust camshaft by controlling the path of the timing belt. First and second idler arms, each having an idler wheel connected thereto, are independently pivoted around a common pivot point by means of a pair of positioning cams operatively connected to an electric stepping motor. The motor is controlled from an electronic control unit which receives signals indicating the engine operating characteristics and through a look-up table steps the positioning cams which in turn pivots the idler arms to rotate the intake camshaft relative to the exhaust camshaft thereby changing the intake valve timing.
摘要翻译： 用于内燃机的可变凸轮轴定时系统通过控制同步带的路径来改变进气凸轮轴和排气凸轮轴之间的相对角位置。 第一和第二空转臂各自具有连接到其上的惰轮，通过可操作地连接到电动步进电机的一对定位凸轮独立地围绕公共枢转点枢转。 电动机由电子控制单元控制，该电子控制单元接收指示发动机操作特性的信号，并且通过查找表对定位凸轮进行步进，定位凸轮又使惰轮枢转，以使进气凸轮轴相对于排气凸轮轴旋转，从而改变进气门 定时。
-
-
搜索结果
3 条记录 (耗时 0.023 秒)
