초록 ▼

An exhaust brake for an internal combustion engine is disclosed. The exhaust brake includes a main valve and a bypass valve for restricting the flow of exhaust gas. The main valve may be selectively closed, while the bypass valve is biased into a closed position with a selective biasing force. Closi

An exhaust brake for an internal combustion engine is disclosed. The exhaust brake includes a main valve and a bypass valve for restricting the flow of exhaust gas. The main valve may be selectively closed, while the bypass valve is biased into a closed position with a selective biasing force. Closing the main valve may cause exhaust back pressure to build against the bypass valve until the biasing force is overcome. When the biasing force is surpassed by the exhaust back pressure, the bypass valve opens to relieve the back pressure. The bypass valve closes when back pressure falls below the biasing force. The biasing force may be varied to operate the exhaust brake at a maximum back pressure for a given engine speed and/or engine condition. A method of operating the exhaust brake is also disclosed.

대표청구항 ▼

[ We claim:] [1.] An exhaust brake comprising:a main exhaust passage;means for selectively blocking the flow of exhaust gas through the main exhaust passage;a bypass exhaust passage communicating with said main exhaust passage and providing for the flow of exhaust gas around the means for selectivel

[ We claim:] [1.] An exhaust brake comprising:a main exhaust passage;means for selectively blocking the flow of exhaust gas through the main exhaust passage;a bypass exhaust passage communicating with said main exhaust passage and providing for the flow of exhaust gas around the means for selectively blocking;means for selectively closing the bypass exhaust passage, said selectively closing means comprising a conical shaped stopper;means for biasing the means for selectively closing in a closed position;means for varying a biasing force applied by the means for biasing to the means for selectively closing; andmeans for applying an opening force to said means for selectively closing, wherein said means for applying an opening force is adapted to mechanically pull said means for selectively closing into an open position.