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，多量のＥＧＲガ スを燃焼室に供給するため，ＥＧＲポートと吸気ポート を別系統に構成し，電磁力駆動装置でＥＧＲ弁の開弁状 態を維持させ，該駆動機構のスペースを小スペースに構 成する。 【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， 吸入行程の初期にＥＧＲガス圧でＥＧＲ弁６をリフト し，ＥＧＲ弁６の開弁状態を電磁石４２と透磁性部材４ １から成る電磁力駆動装置で維持してＥＧＲガスを燃焼 室１へ供給し，次いで，吸気弁７をリフトして圧縮空気 を燃焼室１に供給すると共に燃料の一部を燃焼室１へ供 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) [Problem] To provide a large amount of EGR gas to a combustion chamber, this diesel engine is configured with an EGR port and an intake port in separate systems, and an electromagnetic force driving device controls the EGR valve in an open state. The space for the drive mechanism is made small. The diesel engine cools exhaust gas passing through a turbocharger by a cooling device, At the beginning of the suction stroke, the EGR valve 6 is lifted by the EGR gas pressure, and the open state of the EGR valve 6 is determined by the electromagnet 42 and the magnetically permeable member 4. The EGR gas is supplied to the combustion chamber 1 while being maintained by the electromagnetic driving device composed of the fuel cell 1, and then the intake valve 7 is lifted to supply the compressed air to the combustion chamber 1 and a part of the fuel to the combustion chamber 1. Promotes the mixing of EGR gas, fuel and compressed air, At the compression top dead center, fuel for ignition is injected to ignite and burn the air-fuel mixture to prevent NOx, black smoke and knocking.

Inventors

• 👤 Hideo Kawamura
• 👤 英男 河村

Bibliographic Details