EXHAUST SYSTEM FOR ENGINE

To provide an exhaust system for an engine capable of securing a clearance from auxiliary equipment in front of detection means and the like while reducing the size in the longitudinal direction of a passage around a turbine.SOLUTION: A first passage part 30 is arranged extending forward from a turbine housing 22, a fourth passage part 60 is arranged below the turbine housing 22 extending in the longitudinal direction, and a second passage part 40 is arranged extending in the vertical direction with its center axis X4 inclining forward-diagonally upward. In a third passage part 50 between the second passage part 40 and the fourth passage part 60, there are provided a downstream side connection part 52 extending forward from the front end of the fourth passage part 60 and an upstream side connection part 51 extending forward-diagonally upward from the upper part at the front end of the downstream side connection part 52. On the lower part at the front end of the downstream side connection part 52, a mounting part 53 is provided extending downward from the lower edge of the upstream side connection part 51. Detection means 90 or injection means is mounted to the mounting part 53.SELECTED DRAWING: Figure 1 【課題】タービン回りの通路の前後方向の寸法を小さく抑えつつ検出手段等の前方の補機類との離間距離を確保できるエンジンの排気システムを提供する。【解決手段】第１通路部３０をタービンハウジング２２から前方に延びるように配設し、第４通路部６０をタービンハウジング２２の下方において前後方向に延びるように配設し、第２通路部４０を上下方向に延び且つ中心軸Ｘ４が前斜め上方に傾斜するように配設する。第２通路部４０と第４通路部６０とをつなぐ第３通路部５０に、第４通路部６０の前端部から前方に延びる下流側接続部５２と、下流側接続部５２の前端部の上部から前斜め上方に延びる上流側接続部５１とを設け、下流側接続部５２に、その前端部の下部に設けられて上流側接続部５１の下縁から下方に延びる取付部５３を設けて取付部５３に検出手段９０または噴射手段を取り付ける。【選択図】図１