公开(公告)号：US20170002702A1

公开(公告)日：2017-01-05

申请号：US15039746

申请日：2014-12-03

Applicant: SCANIA CV AB

Inventor： Niclas GUNNARSSON ,  Cedric NYBERG ,  Eric OLOFSSON

IPC: F01L13/06 ,  F01L1/344 ,  F01L1/047 ,  F02B75/02

CPC classification number: F01L13/06 ,  F01L1/047 ,  F01L1/344 ,  F02B75/02 ,  F02B2075/027 ,  F02D13/0249 ,  F02D13/0273 ,  F02D13/04

Abstract: A method to control a four-stroke combustion engine, comprising at least one cylinder; a piston arranged in each cylinder; at least one inlet valve arranged in each cylinder which is connected with an inlet system; at least one first camshaft which controls each inlet valve; at least one exhaust valve arranged in each cylinder which is connected with an exhaust system; at least one second camshaft which controls each exhaust valve; and a crankshaft which controls each camshaft. At least one phase-shifting device is arranged between the crankshaft and the second camshaft, to phase-shift the second camshaft in relation to the crankshaft to a state, where the exhaust valve is controlled in such a way, that it is opened during the expansion stroke of the engine and closed during the exhaust stroke of the engine, to achieve engine braking through compression in the cylinders during the exhaust stroke.

Abstract translation: 一种控制四冲程内燃机的方法，包括至少一个汽缸; 一个排列在每个气缸中的活塞; 至少一个入口阀，布置在每个气缸中，其与入口系统连接; 至少一个第一凸轮轴，其控制每个入口阀; 至少一个排气阀，布置在与排气系统连接的每个气缸中; 至少一个第二凸轮轴，其控制每个排气阀; 以及控制每个凸轮轴的曲轴。 至少一个相移装置设置在曲轴和第二凸轮轴之间，以使第二凸轮轴相对于曲轴相移至排气门以这种方式被控制的状态，即在 发动机的膨胀冲程并且在发动机的排气冲程期间关闭，以在排气冲程期间通过气缸中的压缩来实现发动机制动。