Hyundai Motor Company

Kia Motors Corporation

Kyoung Chan Han

Seung Eun Yu

A vehicle engine aftertreatment system includes: a purification module including a plurality of aftertreatment devices having different characteristics, the aftertreatment devices being arranged in parallel; an upstream selection device provided at one side of the purification module for selectively supplying exhaust gas from an engine to one of the aftertreatment devices; and a downstream selection device provided at the other side of the purification module for discharging exhaust gas from one of the aftertreatment devices to out of the purification module.

Vehicle aftertreatment system enabling the change in the sequence of operating aftertreatment devices

A variable compression ratio engine includes an extra chamber formed at a cylinder head, an extra valve being able to open/close the extra chamber, and an actuator being able to open/close the extra chamber by driving the extra valve.

Variable compression ratio engine

A method of controlling an engine system equipped with a supercharger may include determining a target value of boost pressure, depending on an rpm of an engine and then determining whether the supercharger is in an operable region, deducing a target rpm of the supercharger, based on a reference value previously input into the controller and a current state value of a vehicle input into the controller, when it has been determined in the operating-region determination that the supercharger is in the operable region, setting a maximum value, in the target rpm deduced in the target-rpm deduction, to a drive rpm of the supercharger, and verifying whether the set drive rpm is greater than or equal to a predetermined reference value previously input into the controller, and driving the supercharger at the set drive rpm, by closing the bypass valve to open the supercharger path.

Growing community of inventors

Gunpo-si, South Korea

Kyoung Chan Han