Patent ID: 7779823
Filing Date: 2010-08-24
Classification: F02B,F02D,F02M,Y02T

Abstract:
1. A method of operating an engine including at least a first cylinder and a second cylinder, the method comprising: operating the first cylinder of the engine to provide a net flow of gases from an intake manifold to an exhaust manifold for each cycle of the first cylinder while repetitively combusting a homogeneous mixture including said gases and directly injected fuel in said first cylinder by auto-ignition; and during said operation of the first cylinder, repetitively operating an intake manifold valve of the second cylinder to admit gases from the intake manifold into the second cylinder, injecting fuel directly into the second cylinder to form a mixture of said admitted gases and fuel in said second cylinder, and exhausting said combusted mixture from the second cylinder into the intake manifold via the intake manifold valve while holding an exhaust manifold valve of the second cylinder closed, said homogeneous mixture including at least a portion of said combusted mixture exhausted from the second cylinder.