Gas engine with exhaust gas cooling device for EGR
Abstract
Abstract Translated from Japanese (57)【要約】 【課題】 本発明は,EGR用排気ガスを冷却し,冷却 排気ガスの流量を適正に制御して燃焼室に供給し,ノッ キングの発生防止とNO X の発生を抑制する。 【解決手段】 このガスエンジンは,排気ガスを冷却装 置7で冷却し,適正量の冷却排気ガスを主室1へ供給す る。冷却装置7は,一端が排気管28に且つ他端が主室 1へと連通するEGR冷却通路55を構成する筒体5 0,筒体50の外側に設けた冷却フィン56,及び筒体 50内のEGR冷却通路55を貫通したEGR制御弁6 1を設けた遮熱構造の排気管51から成る。筒体50内 には多数の通孔58を備えたパイプ53が配置され,排 気管51内には多数の通孔59を備えた消音パイプ54 が配置されている。筒体50とパイプ53は,高熱伝導 材から作製されている。 (57) Abstract: The present invention, the EGR exhaust gas cooling, and properly control the flow rate of the cooling exhaust gas is supplied to the combustion chamber, suppress the generation of prevention and NO X of knocking . The gas engine cools exhaust gas with a cooling device and supplies an appropriate amount of cooled exhaust gas to a main chamber. The cooling device 7 includes a cylindrical body 5 forming an EGR cooling passage 55 having one end communicating with the exhaust pipe 28 and the other end communicating with the main chamber 1. 0, a cooling fin 56 provided outside the cylindrical body 50, and an EGR control valve 6 penetrating through an EGR cooling passage 55 in the cylindrical body 50. 1 is provided with an exhaust pipe 51 having a heat shielding structure. A pipe 53 having a large number of through holes 58 is disposed in the cylindrical body 50, and a muffling pipe 54 having a large number of through holes 59 in the exhaust pipe 51. Is arranged. The tubular body 50 and the pipe 53 are made of a high heat conductive material.
Inventors
- 👤 Hideo Kawamura
- 👤 英男 河村
Bibliographic Details
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