Hyundai Motor Company

Kia Motors Corporation

Seong-Kyu Park

Hyung-Ju Lee

Kyu-Jin Jo

Seung-Woo Lee

Jung-Sup Byun

Jae-Woong Yoo

Chan-Hee Won

Jae-Sung Chung

A method for preventing an engine overheat based on a coolant temperature applied to an engine systemis provided, in which a controllerchecks if a coolant coming from an engineis distributed to any one of a heater coreB and an ATF warmerA as a radiatoris switched from a distribution blocking state (i.e., radiator closed) at a diagnosis start to a distribution state (i.e., radiator open) during the diagnosis under the control of an opening degree of an ITM valve, diagnoses lack of a coolant amount using factors B determined by an inlet/outlet coolant temperature difference T of the enginethrough first and second water temperature sensorsA andB as a factor cumulative value A, and then controls the ITM valveto a full open state in a state where a coolant temperature increase is predicted.

Method for preventing engine overheat based on coolant temperature and engine system thereof

A method of controlling engine restart may include selecting, by a start controller, a first start situation and a second start situation for restarting an engine; determining a current possible start-up through the first and second start situations; prioritizing possible start-ups; and attempting to restart the engine by setting the first and second start situations as first start control and second start control, respectively, based on the priorities of the start-ups.

Method of controlling engine restart of vehicle

A method for selecting a gear when Start-Stop Coasting (SSC) is released may include: determining whether a traveling vehicle satisfies a condition for releasing SSC after entry into SSC (S); selecting a gear input to a transmission (S) when the traveling vehicle satisfies the condition for releasing SSC after entry into SSC; determining a road gradient (S) when the traveling vehicle satisfies the condition for releasing SSC after entry into SSC; and correcting the selected gear according to a pre-stored correction map so as to correspond to the determined road gradient.

Method and apparatus for selecting gear when SSC is released

A SSC control method includes a condition satisfaction determination step of determining whether a vehicle can coast and a navigation information acquisition step of obtaining forward road information regarding a road section ahead of a current vehicle position when it is determined, in the condition satisfaction determination step, that the vehicle can coast. The method further includes a forward quick turn section determination step of determining whether a quick turn section exists in the road section ahead by using the forward road information obtained in the navigation information acquisition step, and an SSC entry step of controlling the vehicle to coast when it is determined in the forward quick turn section determination step that the quick turn section does not exist in the road section ahead.

Growing community of inventors

Suwon-si, South Korea

Seong-Kyu Park