Patent ID: 9664148
Date: 2017-05-30
CPC Classifications: F01N,F02M

Claim:
1. An engine system having donor cylinders and non- donor cylinders, comprising: a first intake manifold configured to distribute air into the non-donor cylinders; a second intake manifold separate from the first intake manifold and configured to distribute of into the donor cylinders; a first exhaust manifold configured to discharge exhaust from the non-donor cylinders to the atmosphere; a second exhaust manifold separate from the first exhaust manifold and configured to recirculate exhaust from the donor cylinders to the first intake manifold; an adjustably variable orifice configured to regulate a flow rate of air flowing into the second intake manifold; a blower configured to regulate a flow rate of exhaust that is recirculated from the donor cylinders to the first intake manifold, wherein the blower is positioned upstream of the first intake manifold; and a controller configured to selectively control an operation of at least one of the adjustably variable orifice and the blower in response to a desired exhaust gas recirculation operating condition corresponding to a load change on the engine system.