| 摘要 |
PURPOSE: An integral EGR(Exhaust Gas Recirculation) cooler and an EGR system with the same are provided with the reduced manufacturing costs and weight as high and low pressure coolers are integrally manufactured. CONSTITUTION: An EGR system comprises an integral EGR cooler(150), an EGR intake line(180), and an EGR exhaust line(190). The integral EGR cooler comprises a high pressure cooler unit and a low pressure cooler unit. The high pressure cooler unit decreases the temperature of high temperature and pressure exhaust gas in an engine(110). The low pressure cooler unit decreases the temperature of low temperature and pressure exhaust gas. The EGR intake line comprises a high pressure intake line(181) and a low pressure intake line(185). The high pressure intake line connects the high pressure cooler unit to an intake unit(120) which is mounted on one side of the engine. The low pressure intake line connects the low pressure cooler unit to the intake unit. The EGR exhaust line comprises a high pressure exhaust line(191) and a low pressure exhaust line(195). The high pressure exhaust line connects the high pressure cooler unit to an exhaust line(130) which is mounted on the other side of the engine. The low exhaust line connects the low pressure cooler unit to the exhaust unit. [Reference numerals] (AA) Coolant outlet; (BB) Coolant inlet |
