Patent ID: 9068500
Filing Date: 2015-06-30
Classification: F01L,F02B,F02D,F02M,Y02T

Abstract:
1. An engine comprising: a first turbine fluidically coupled to a first group of adjacent cylinders via a first exhaust conduit; a second turbine fluidically coupled to a second group of adjacent cylinders arranged along a line with the first group of cylinders, the second turbine fluidically coupled to the second group via a second exhaust conduit, the first exhaust conduit and the second exhaust conduit fluidly coupled via a connecting valve and in thermal communication with coolant jackets of a cylinder head; a variable valve-lift system configured to admit at least air to the first group of cylinders during reduced engine-load conditions, but to stop admitting air to the second group of cylinders during the reduced engine-load conditions; a first compressor fluidically coupled to the first group of cylinders via a first intake conduit and mechanically coupled to the first turbine, the first intake conduit including a first throttle valve and one or more merge portions that merge into the first compressor, the first intake conduit only coupled to the first group of cylinders downstream of the first throttle; and a second compressor fluidically coupled to the second group of cylinders via a second intake conduit and mechanically coupled to the second turbine, the second intake conduit including a second throttle valve and one or more merge portions that merge into the second compressor, the second intake conduit only coupled to the second group of cylinders downstream of the second throttle; and a crankshaft having a throw associated with each cylinder and coupled rotationally to a piston within that cylinder, wherein the crankshaft presents a rotation axis, wherein the throws associated with all cylinders of the first group eclipse each other when viewed from a point along the rotation axis; and wherein the throws associated with all cylinders of the second group eclipse each other when viewed from a point along the rotation axis.