INTAKE STRUCTURE OF ENGINE

• Main Authors: NOOMO AKIRA, YAMAUCHI TAKETOSHI, KATO JIRO, KOJIMA YUJI, TSUDA SHU, FUJIHIRA SHINJI, HASEGAWA YUICHI
• Format: Patent
• Language: English; Japanese
• Published: 07.06.2023
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; 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; WEAPONS

To provide an intake structure of an engine capable of more reliably suppressing vibration of an intake passage.SOLUTION: A throttle valve body is connected to an upper end of an intake manifold, and when a direction parallel to a horizontal direction and along one side surface of an engine body is a lateral direction, the intake manifold curves and extends from the throttle valve body toward one side in the lateral direction and downward. An EGR passage includes a vertical pipe portion extending in a vertical direction and having an upper end connected to a surface on the other side in the lateral direction in an upper portion of the intake manifold, and a connection portion for connecting a lower end of the vertical pipe portion with a lower exhaust passage.SELECTED DRAWING: Figure 4 【課題】吸気通路の振動をより確実に抑制できるエンジンの吸気構造を提供する。【解決手段】スロットルバルブボディを、インテークマニホールドの上端に連結し、水平方向と平行で且つエンジン本体の一側面に沿う方向を横方向としたとき、インテークマニホールドを、スロットルバルブボディから横方向の一方且つ下方に向かって湾曲しつつ延びる形状とし、ＥＧＲ通路に、上下方向に延びるとともに上端部がインテークマニホールドの上部における横方向の他方側の面に接続された縦管部と、当該縦管部の下端部と下側排気通路とを連結する連結部とを設ける、ことを特徴とするエンジンの吸気構造。【選択図】図４