公开(公告)号：US4220008A

公开(公告)日：1980-09-02

申请号：US973739

申请日：1978-12-28

申请人： Dennis A. Wilber ,  John P. Schnapp

发明人： Dennis A. Wilber ,  John P. Schnapp

IPC分类号： F02B37/02 ,  F02B37/22 ,  F02B39/00 ,  F02D9/06 ,  F02D9/16 ,  F02B37/00

CPC分类号： F02B37/22 ,  F02D9/06 ,  F02D9/16 ,  Y02T10/144

摘要： An exhaust brake modulating control system is provided for an internal combustion engine having a turbo-charger and source of pressurized fluid. The system includes a double-acting piston-cylinder assembly having one cylinder end communicating with the engine exhaust manifold and an opposite end separated from the one end by a piston head. An adjustable control valve is provided having an outlet connected to the cylinder second end, and a plurality of inlets selectively connected to the outlet. One inlet communicates with the pressurized fluid source and a second inlet is vented to the atmosphere. Communicating with the exhaust manifold is an inlet of a hollow section in which a rotor is rotatably mounted. The hollow section has an outlet separated from the inlet by the rotor. The outlet communicates with the turbine wheel chamber of the turbo-charger. When the rotor assumes a first selected position, substantially unrestricted exhaust gas flow past the rotor occurs. When the rotor assumes a second selected position, gas flow is substantially blocked by the rotor. The rotor and piston head are operatively connected whereby the rotor is responsive to relative movement of the piston head within the cylinder. When the control valve connects the cylinder second end to the pressurized fluid source, the fluid pressure will balance a predetermined gas pressure on the piston head whereby the head will cause the rotor to assume a position that generates a predetermined exhaust braking effect.

摘要翻译： 为具有涡轮增压器和加压流体源的内燃机提供排气制动调节控制系统。 该系统包括双作用活塞 - 气缸组件，其具有与发动机排气歧管连通的一个气缸端，以及通过活塞头与该一端分离的相对端。 提供了一种可调控制阀，其具有连接到气缸第二端的出口，并且多个入口选择性地连接到出口。 一个入口与加压流体源连通，第二个入口通向大气。 与排气歧管通信是转子安装在其中的中空部分的入口。 中空部分具有通过转子与入口分开的出口。 出口与涡轮增压器的涡轮机叶轮室连通。 当转子处于第一选定位置时，发生基本上不受限制的废气流过转子。 当转子处于第二选定位置时，气流基本上被转子阻挡。 转子和活塞头可操作地连接，由此转子响应于活塞头在气缸内的相对运动。 当控制阀将气缸第二端连接到加压流体源时，流体压力将平衡活塞头上的预定气体压力，由此头部将使转子呈现产生预定排气制动效果的位置。