Diesel engine with EGR device

Abstract

Abstract Translated from Japanese (57)【要約】 【課題】 このディーゼルエンジンは，燃焼室へのＥＧ Ｒガスの供給系と圧縮空気の供給系と別に設け，吸入行 程で燃焼室に多量のＥＧＲガスを供給し，次いで，燃料 の一部と圧縮空気を燃焼室に供給してそれらを良好に予 混合し，ノッキングの発生を防止すると共に，ＮＯｘや 黒煙の発生を防止する。 【解決手段】 このディーゼルエンジンは，ターボチャ ージャ１４を通った排気ガスを冷却装置１７で冷却し， 吸入行程の初期でＥＧＲ弁６をリフトしてＥＧＲガスを 燃焼室１へ供給し，次いで，燃料噴射ノズル２から燃料 の一部を燃焼室１へ供給すると共に，吸気弁７がリフト して圧縮空気を燃焼室１に供給し，ＥＧＲガス，燃料及 び圧縮空気の混合を促進し，圧縮上死点近傍で着火用燃 料を噴射して混合気を着火燃焼させ，ＮＯｘ，黒煙，ノ ッキングの発生を防止する。 (57) [Summary] [Problem] This diesel engine is equipped with EG to the combustion chamber. Provided separately from the R gas supply system and the compressed air supply system, a large amount of EGR gas is supplied to the combustion chamber during the intake stroke, and then a part of the fuel and compressed air are supplied to the combustion chamber so that they are well pre- pared. It mixes to prevent knocking and NOx and black smoke. The diesel engine cools exhaust gas passing through a turbocharger by a cooling device, At the beginning of the intake stroke, the EGR valve 6 is lifted to supply the EGR gas to the combustion chamber 1, and then a part of the fuel is supplied from the fuel injection nozzle 2 to the combustion chamber 1, and the intake valve 7 is lifted and compressed. Air is supplied to the combustion chamber 1 to promote mixing of EGR gas, fuel and compressed air, and to ignite and burn the mixture by injecting ignition fuel near the compression top dead center to generate NOx, black smoke and knocking. To prevent

Inventors

• 👤 Hideo Kawamura
• 👤 英男 河村

Bibliographic Details