Engine exhaust sealing structure

• Main Authors: LIU CHANGZHEN, ZHANG JIE, REN WEI, WANG MAN, BAI JUN'AI, LI XUDONG, MA JUNHUA, XU GUANGHUI, WANG HONGLI, HAO YONGGANG, CUI WEIFU, WEI ZHIMING, ZHANG QUANZHONG, ZHEN HONGMEI
• Format: Patent
• Language: English
• Published: 05.08.2015
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

The invention provides an engine exhaust sealing structure. The engine exhaust sealing structure comprises multiple O-shaped rubber sealing rings respectively arranged between engine bodies at two sides of a high-temperature exhaust port and a cylinder sleeve, wherein a cooling water way is arranged at the outer side of the high-temperature exhaust port between the engine bodies and the cylinder sleeve; and a cooling water way is arranged at the outer side of the high-temperature exhaust port on the engine bodies. The engine exhaust sealing structure has the following advantages and active effects: the cooling water ways are respectively arranged at the outer sides of the radial O-shaped rubber sealing rings and the high-temperature exhaust port for forcedly cooling, so that the working environment of the O-shaped rubber sealing rings is always located in a safe working temperature range; the fit gap between the cylinder sleeve and the high-temperature exhaust port and the distance from the O-shaped rubber sealing ring to the high-temperature exhaust port are reasonably designed; and the gap between the cylinder sleeve and the high-temperature exhaust port is eliminated, so that high-temperature fuel smoothly passes through the high-temperature exhaust port without burning the rubber sealing ring.