REDUCED TORQUE VARIATION FOR ENGINES WITH ACTIVE FUEL MANAGEMENT

摘要

In one exemplary embodiment of the invention, an internal combustion engine includes a first set of cylinders in a first bank of the internal combustion engine and a second set of cylinders in a second bank of the internal combustion engine. The engine also includes a flat-plane crankshaft coupled to the first set of cylinders and the second set of cylinders. The pressure in the deactivated cylinders is controlled by gas injections and the bank angle between the first bank and second bank that is adjusted from a 90 degree bank angle by a selected angle to reduce an amplitude of second order torque variations when the internal combustion engine is operating in a fuel saving mode.

主权项

1. An internal combustion engine comprising:
a first set of cylinders in a first bank of the internal combustion engine; a second set of cylinders in a second bank of the internal combustion engine; a flat-plane crankshaft coupled to the first set of cylinders and the second set of cylinders; and a bank angle between the first bank and second bank that is adjusted from a 90 degree bank angle by a selected angle to reduce an amplitude of second order torque variations when the internal combustion engine is operating in a fuel saving mode.