Hyundai Motor Company

Kia Motors Corporation

Byung Soon Min

Young Chan Byun

Seon Young Park

Eui Sun Hong

Sang Jin Heo

Jae Young Choi

Seok Won Kim

Hyung Seuk Ohn

Jae Heon Lee

Disclosed is a system and method for computing distance to empty (DTE) based on available energy computed using a battery SOC vs open circuit voltage (OCV) table, battery temperature vs energy efficiency, an energy efficiency vs energy table, etc., to enable a more accurate calculation of the DTE in consideration of the temperature of the battery, which is one of disturbance elements.

System and method for calculating distance to empty of green vehicle

The present invention provides an exhaust heat recovery device configured to perform heat exchange between three media such as, exhaust gas, coolant, and oil. According to preferred embodiments of the present invention, the exhaust heat recovery device is configured such that the heat of exhaust gas discharged from an engine is transmitted to the coolant and the oil at the same time and direct heat exchange between the coolant and the oil is made, thereby simultaneously increasing the temperature of the coolant and the oil during the initial start-up of the engine (fast warm-up). As a result, it is possible to reduce friction loss of powertrain, thereby improving fuel efficiency. Accordingly, an object of the present invention is to provide an exhaust heat recovery device which is configured to perform the integral heat exchange between the exhaust gas, the coolant, and the oil.

Exhaust heat recovery device

Growing community of inventors

Gyeonggi-do, South Korea

Byung Soon Min