Quinn Law Group, PLLC
Powertrain and method of determining residual gas volume
A method can be used to determine the total residual gas volume in a cylinder when the piston of an internal combustion engine is at the bottom dead center (BDC) position. The method includes: (a) measuring an intake manifold pressure and an exhaust manifold pressure; (b) determining a residual gas volume in the at least one cylinder originating from a current engine cycle; (c) determining a residual gas volume in the at least one intake port originating from at least one previous engine cycle; and (d) determining a total residual gas volume when the piston is at a BDC position based, at least in part, on the residual gas volume in the at least one cylinder originating from the current engine cycle and the residual gas volume in the at least one cylinder originating from at least one previous engine cycle.
GM Global Technology Operations LLC
F Y F F F F F F Y F F F F
F01N Y02T F02D F02D F02D F02D F02D F02D Y02T F01N F01N F02D F02D
inventional additional additional additional additional additional inventional additional additional inventional inventional inventional inventional
Chen-Fang Yiran Yongjie Jun-Mo Hanho
Chang Hu Zhu Kang Yun