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AssigneesKia Motors Corporation, Hyundai Motor Company
InventorsDong Myoung RYOO, Buyeol Ryu, Dea Gil Hwang
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A urea solution heating device prevents freezing of a urea solution by using exhaust gas of an engine. More particularly, a urea solution heating device may use a pressure difference between an exhaust gas pipe and a muffler to bypass the exhaust gas to exchange heat between the exhaust gas and the urea solution. The urea solution heating device may include an exhaust gas pipe, a muffler, a first bypass pipe diverged from the exhaust gas pipe, a urea solution tank to which the bypassed exhaust gas is supplied, a second bypass pipe connected to the muffler, and a heat exchanger, wherein the exhaust gas sequentially flows through the first bypass line, the heat exchanger, and the second bypass line by a pressure difference between the exhaust gas pipe and the muffler. An urea solution heating method is also described.
A urea solution heating device, comprising:
A urea solution heating method, in a urea solution heating device that includes an exhaust gas pipe exhausting exhaust gas of an engine, a muffler connected to the exhaust gas pipe, a urea solution tank filled with a urea solution, a bypass pipe diverging from the exhaust gas pipe to be connected to the muffler through the urea solution tank, and a solenoid valve that selectively open/closes the bypass pipe, comprising the steps of:
Dependencies are inferred from the claim text.