Patent ID: 11959409
Assignee: ISUZU MOTORS LIMITED
Field: Environmental technology (Chemistry)
Classification: CPC F  Y | IPC F

Claim 2:
3. The internal-combustion-engine warm-up apparatus according to claim 1, wherein
the heat exchanger is arranged on the exhaust path,
the circulation path includes a first branch path that branches off from the exhaust path at a portion located upstream of the heat exchanger,
the internal-combustion-engine warm-up apparatus further comprises a first valve that is arranged at the portion where the first branch path branches off from the exhaust path, and switches between a state where the heated air flows through the first branch path, and a state where the heated air flows through the exhaust path, and
in a case that a temperature of the engine exceeds a predetermined threshold in a state where the heated air is being supplied to the post-processing apparatus and the heat exchanger, the control apparatus controls the first valve, and causes the heated air to flow through the first branch path, and to circulate in the circulation path.