ENGINE SYSTEM HAVING REDUCED PRESSURE EGR SYSTEM

摘要

An engine system having donor cylinders and non-donor cylinders is disclosed. The engine system may have a first intake manifold configured to distribute air into the non-donor cylinders, and a second intake manifold configured to distribute air into the donor cylinders. The engine system may also have a first exhaust manifold configured to discharge exhaust from the non-donor cylinders to the atmosphere, and a second exhaust manifold separate from the first exhaust manifold and configured to recirculate exhaust from the donor cylinders to the first intake manifold. The engine system may further have an orifice disposed in between the first intake manifold and the second intake manifold. The orifice may be configured to regulate a flow rate of fluid flowing from the first intake manifold to the second intake manifold. The engine system may further have a controller configured to selectively control the orifice in response to a desired exhaust gas recirculation operating condition.

主权项

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 configured to distribute air 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 orifice disposed in between the first intake manifold and the second intake manifold, the orifice being configured to regulate a flow rate of fluid flowing from the first intake manifold to the second intake manifold; and a controller configured to selectively control the orifice in response to a desired exhaust gas recirculation operating condition.