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2. 发明申请

WO02052129A8 DEVICE AND METHOD FOR ENGINE BREAKING OF MOTOR VEHICLE 审中-公开
标题翻译：电动汽车发动机断裂装置及方法
公开(公告)号：WO02052129A8
公开(公告)日：2003-05-15
申请号：PCT/SE0102663
申请日：2001-12-04
申请人： VOLVO LASTVAGNAR AB , BERGLUND SIXTEN , HAAKANSSON NILS-OLOF , OLSSON GOERAN
发明人： BERGLUND SIXTEN , HAAKANSSON NILS-OLOF , OLSSON GOERAN
IPC分类号： F01L1/24 , F01L13/06 , F02D13/04 , F01L1/20 , B60K41/00
CPC分类号： F01L1/24 , F01L1/181 , F01L13/065 , F01L2105/00 , F01L2760/004 , F02D13/04
摘要： The invention relates to a device for engine breaking in motor vehicles comprising an internal combustion engine with at least one cylinder, at least one exhaust valve at said cylinder and a rocker arm (4) for activation of said exhaust valve, which rocker arm (4) is arranged on a hollow rocker arm shaft (5) and arranged to be effected by ridges (2a, 2b, 2c) on a camshaft (2), said device additionally comprising a control valve (15, 16) for controlling the oil pressure in said rocker arm shaft (5), and means (6; 14) receptive to an increase of the oil pressure in said rocker arm shaft (5) being integrated in said rocker arm (4) for absorbing a play between said rocker arm (4) and said exhaust valve in the case of increase oil pressure, with at least one of said ridges (2b, 2c) then causing opening of the exhaust valve with an engine breaking effect. The invention is characterized in that said control valve (15) comprises an adjustable valve body (18, 19) and a canal (23) between the valve body (18, 19) and the rocker arm shaft (5) which comprises a controlable exhaust (36), the valve body (18, 19) being arranged to be positioned in a first position with pressure reducing effect and a second position without pressure reducing effect. The invention also relates to a method for such engine breaking. By means of the invention an engine breaking is obtained which is particularly suitable for use for a rapid decrease of the engine speed when shiftings in a gearbox associated with the engine.
摘要翻译：本发明涉及一种用于机动车辆中的发动机破坏的装置，其包括具有至少一个气缸的内燃机，所述气缸处的至少一个排气阀和用于启动所述排气阀的摇臂（4），该摇臂（4））设置在空心摇臂轴（5）上并且布置成由凸轮轴（2）上的脊（2a，2b，2c）实现，所述装置还包括用于控制油压的控制阀（15,16）在所述摇臂轴（5）中，以及容纳所述摇臂轴（5）中的油压增加的装置（6; 14），所述装置集成在所述摇臂（4）中，用于吸收所述摇臂 4）和所述排气阀在增加油压的情况下，至少一个所述脊（2b，2c）然后引起排气门的打开，并具有发动机破坏作用。本发明的特征在于，所述控制阀（15）包括可调节阀体（18,19）和在阀体（18,19）和摇臂轴（5）之间的通道（23），其包括可控制的排气（36），所述阀体（18,19）被布置成位于具有减压效果的第一位置和不具有减压效果的第二位置。本发明还涉及这种发动机破碎的方法。通过本发明，获得了特别适用于在与发动机相关联的变速箱中移动时快速降低发动机转速的发动机断裂。

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