Turbocharger
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsAkitoshi Iwata, Takashi Tsunooka
Life of this patent
Estimating the term…
Abstract
A turbocharger includes a turbine housing and a wastegate. The turbine housing has an accommodation space, is which a turbine wheel is accommodated. The accommodation space is connected to a scroll passage, which draws exhaust gas from the outside of the turbine housing, and a connection passage, which discharges exhaust gas from the accommodation space. The connection passage is connected to a merging passage, which discharges exhaust gas to the outside of the turbine housing. The merging passage is connected to a bypass passage, which bypasses the accommodation space. The central axis of an outlet portion of the connection passage is inclined with respect to the rotation axis of the turbine wheel toward the side on which an outlet portion of the bypass passage is located.
Claims5
A turbocharger comprising:
- a turbine housing, which accommodates a turbine wheel;
- and
- a wastegate, which is rotationally supported by turbine housing, wherein
- the turbine housing includes
- an accommodation space, in which the turbine wheel is accommodated,
- a scroll passage, which is connected to the accommodation space and is configured to draw exhaust gas from outside of the turbine housing to the accommodation space,
- a connection passage, which is connected to the accommodation space and is configured to discharge exhaust gas from the accommodation space,
- a merging passage, which is connected to the connection passage and is configured to discharge exhaust gas to the outside of the turbine housing, and
- a bypass passage, which bypasses the accommodation space and is connected to the merging passage,
- the connection passage has an outlet portion that is connected to the merging passage,
- the bypass passage has an outlet portion that is connected to the merging passage,
- the wastegate includes
- a pivot shaft, which is pivotally supported by the turbine housing,
- a first valve member, which is fixed to the pivot shaft and is configured to close the outlet portion of the connection passage, and
- a second valve member, which is fixed to the pivot shaft to be separated from the first valve member in a circumferential direction about a pivot axis of the pivot shaft, the second valve member being configured to close the outlet portion of the bypass passage, and
- a central axis of the outlet portion of the connection passage is inclined with respect to a rotation axis of the turbine wheel toward a side on which the outlet portion of the bypass passage is located.
Dependencies are inferred from the claim text.