A device for preventing water ingress and automatically switching the height of engine intake and exhaust pipes from the ground

Abstract

The invention discloses a water-inlet-prevention device capable of automatically switching off-ground height of an air inlet pipe and an exhaust pipe of an engine. The device comprises the engine, a floater barrel and an ECM, wherein the exhaust pipe and the air inlet pipe are arranged on the two sides of the upper end of the engine correspondingly, an exhaust pipe reversing valve is arranged on the exhaust pipe, the upper end of the exhaust pipe reversing valve is connected with an exhaust bypass pipe and communicates with the exhaust bypass pipe, an air inlet pipe reversing valve is arrangedon the air inlet pipe, the upper end of the air inlet pipe reversing valve is connected with an air inlet bypass pipe and communicates with the air inlet bypass pipe, a sealing ring sleeves the floater barrel and is in sliding connection with the floater barrel, a water inlet is formed in the part, located below the sealing ring, of the floater barrel, a rack is fixed at the side end of the sealing ring, and the rack is meshed with a gear fixed on an output shaft of a stepping motor. When a vehicle runs on a road where the excessively deep accumulated water is formed or is parked in a waterlogging state, the accumulated water can be effectively prevented from entering an air cylinder of the engine from the exhaust pipe or the air inlet pipe, and the probability that the water enters the air cylinder of the engine can be effectively reduced through switching between the bypass pipes.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a device for preventing water ingress and automatically switching the height of engine intake and exhaust pipes from the ground. Background technique [0002] When the vehicle is driving on a road with too deep water or parking waterlogging, the water can enter the engine cylinder from the exhaust pipe or intake pipe. The dirt and impurities in the accumulated water will cause the wear of the cylinder liner and piston components, the blockage of the spark plug, the abnormal operation and corrosion of the throttle valve, intake and exhaust valve and other mechanisms. In addition, the entry of accumulated water will occupy the volume of the cylinder, causing a sudden increase in the working pressure in the cylinder, causing deformation and damage to components such as the crankshaft and valves. Contents of the invention [0003] In order to solve the above existing problems,...

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