ENGINE WITH SUPERCHARGER

• Main Authors: EBISU EISAKU, NISHIDA RYOTARO
• Format: Patent
• Language: English; Japanese
• Published: 21.12.2017
• Subjects: BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

PROBLEM TO BE SOLVED: To achieve compact layout of a bypass passage while suppressing an in-cylinder difference of intake efficiency in an engine with a turbocharger having a bypass passage which bypasses the turbocharger.SOLUTION: In an engine 1, a supercharger 50 disposed on a lateral side of an attachment face 10a, an intercooler 60 disposed below the supercharger 50, and a distribution passage 70 are provided in an intake passage 30 in this order from upstream side. A bypass passage 80 which is formed so as to connect a branch part 34c positioned upstream of the supercharger 50 to a merging part 65 positioned between a core 61 and the distribution passage 70 is provided in the intake passage 30. The branch part 34c is positioned at one side in a cylinder row direction with respect to the supercharger 50 on a lateral side of the attachment face 10a. The merging part 65 is disposed on an outer surface of the branch part 34s in a cooler housing 63, and communicates with a downstream side portion S2 with respect to the core 61 in the cooler housing 63.SELECTED DRAWING: Figure 6 【課題】過給機を迂回するバイパス通路を備えた過吸機付きエンジンにおいて、吸気効率の気筒間差を抑制しつつ、バイパス通路をコンパクトにレイアウトする。【解決手段】エンジン１において、吸気通路３０には、取付面１０ａの側方に配置された過給機５０と、過給機５０の下方に配置されたインタークーラ６０と、分配通路７０と、が上流側から順に設けられている。吸気通路３０にはまた、過給機５０よりも上流側に配設された分岐部３４ｃを、コア６１と分配通路７０との間に配設された合流部６５に接続するように構成されたバイパス通路８０が設けられ、分岐部３４ｃは、取付面１０ａの側方において、過給機５０に対し気筒列方向の一方側に配置されている一方、合流部６５は、クーラハウジング６３における分岐部３４ｃ側の外面に配設されていると共に、クーラハウジング６３内においてコア６１よりも下流側部分Ｓ２に連通している。【選択図】図６