INTERNAL COMBUSTION ENGINE SYSTEM AND VEHICLE

• Main Authors: SAKAI JUNJI, KINOSHITA DAISUKE, KATO KENJI, FUJIHARA TOMOHIRO, SAWAUCHI YUTA, MIYAGISHI NAOKI, FUNATSU TOMONORI, IKENO RYO, HOSOMI GONTA, MATSUI SHORI
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2022
• Subjects: BLASTING; COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

To provide an internal combustion engine system capable of facilitating merging of EGR gas with fresh air, and a vehicle.SOLUTION: An internal combustion engine system comprises an intake passage that guides fresh air to a combustion chamber, and an EGR passage in which part of exhaust gas from the combustion chamber is used as EGR gas and merged with the fresh air flowing through the intake passage. The intake passage has an upstream side passage arranged on the upstream side of the fresh air with respect to a predetermined position in the intake passage and having a passage cross-sectional area that decreases toward the downstream side of the fresh air, and a downstream side passage arranged on the downstream side of the fresh air with respect to the predetermined position and having a passage cross-sectional area that expands toward the downstream side of the fresh air. The EGR passage is arranged to introduce the EGR gas into a gap between the downstream end of the upstream side passage and the upstream end of the downstream side passage.SELECTED DRAWING: Figure 2B 【課題】ＥＧＲガスを新気と合流し易くすることが可能な内燃機関システムおよび車両を提供する。【解決手段】内燃機関システムは、新気を燃焼室へ導く吸気通路と、燃焼室からの排気の一部をＥＧＲガスとして、吸気通路を流れる新気と合流させるＥＧＲ通路と、を備え、吸気通路は、吸気通路における所定位置よりも新気上流側に配置され、新気下流側に向かって通路断面積を減少する上流側通路と、所定位置よりも新気下流側に配置され、新気下流側に向かって通路断面積を拡大する下流側通路とを有し、ＥＧＲ通路は、前記上流側通路の下流端と下流側通路の上流端との間の隙間にＥＧＲガスを導入するように配置される。【選択図】図２Ｂ