Patent ID: 11965448
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Chemical engineering (Chemistry)
Classification: CPC F  B  Y | IPC B  F

Claim 0:
1. A catalyst device for an exhaust passage of an internal combustion engine including a forced-induction device, the catalyst device comprising:
a catalyst support configured to purify exhaust gas, the catalyst support including a catalyst upstream end;
a heating element configured to heat the catalyst support by generating heat when energized;
a case of the exhaust passage formed as a pipe configured to accommodate the catalyst support and the heating element, the case including an upstream end portion which protrudes upstream of the catalyst upstream end; and
an outer tube configured to be radially separated from the case so as to concentrically overlap with the upstream end portion of the case,
wherein the upstream end portion of the case is an insulating portion configured to insulate electricity, and
wherein the outer tube is at least partially defined by a turbine housing that houses a turbine wheel of the forced-induction device.