Variable control method of an exhaust temperature increase in a DLEV system
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsKyoung-Chan Han, Joon-Hee Lee
Life of this patent
Estimating the term…
Abstract
A variable control method of exhaust temperature increase includes, when a cam phaser, which is connected to a double cam shaft having a coaxial arrangement structure of an outer shaft and an inner shaft, is operated and when a cam angle is determined as being varied by a controller, a cam phaser position change control is performed of decreasing a flow rate of an internal exhaust gas recirculation (EGR) supplied to a cylinder of an engine with a cam advance angle, increasing the flow rate of the EGR with a cam retard angle, or blocking the flow rate of the EGR with a maximal cam advance angle.
Claims17
A variable control method of exhaust temperature increase, comprising:
- when a cam phaser is operated, the cam phaser being connected to a double cam shaft having a coaxial arrangement structure of an outer shaft and an inner shaft, and when a cam angle is determined as being varied by a controller, performing a cam phaser position change control of decreasing a flow rate of an internal exhaust gas recirculation (EGR) supplied to a cylinder of an engine with a cam advance angle, increasing the flow rate of the EGR with a cam retard angle, or blocking the flow rate of the EGR with a maximal cam advance angle.
A double lift exhaust valve (DLEV) system, comprising:
- a controller configured to change a cam angle by performing a cam advance angle control in which a flow rate of an internal exhaust gas recirculation (EGR) supplied to a cylinder of an engine is decreased due to a cam advance angle, a cam retard angle control in which the flow rate of the internal EGR is increased due to a cam retard angle, and a maximal cam advance angle control in which the flow rate of the internal EGR is blocked due to a maximal cam advance angle.
Dependencies are inferred from the claim text.