EXHAUST SYSTEM STATE DETERMINATION METHOD AND EXHAUST SYSTEM STATE DETERMINATION DEVICE

WIPO Patent Application WO/2024/013964

A1

When an internal combustion engine (2) mounted in a vehicle temporarily stops for a prescribed time or longer during an operation of the vehicle and the outside temperature is less than or equal to a prescribed temperature, it is determined that icing has occurred on one of a differential pressure sensor (8) that detects a pressure loss of a GPF (5) provided in an exhaust path (3) of the internal combustion engine (2), an inlet-side pressure introduction pipe (10), and an outlet-side pressure introduction pipe (11), the pressure introduction pipes being paths for introducing a pressure into the differential pressure sensor (8). Thus, a failure of the differential pressure sensor (8) to output an output signal of a correct value due to icing during the operation of the vehicle can be determined with high accuracy.

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SHIBATA TOHRU (JP)
HOSHINO MINA (JP)

PCT/JP2022/027802

January 18, 2024

July 15, 2022

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NISSAN MOTOR (JP)

F01N3/023; B60W20/16; F01N11/00

WO2015128970A1

2015-09-03

JP2020143595A	2020-09-10
JP2012184756A	2012-09-27
JPH11132026A	1999-05-18
CN110469403A	2019-11-19
CN113775398A	2021-12-10

KOBAYASHI, Hiromichi et al. (JP)

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