公开(公告)号：US20190308490A1

公开(公告)日：2019-10-10

申请号：US16367754

申请日：2019-03-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tsuyoshi OBUCHI

IPC: B60H1/03 ,  B60W10/30 ,  B60L58/13 ,  B60W10/06 ,  B60K6/22

Abstract: The control apparatus includes a heater configured to generate heat to heat the internal combustion engine, a controller configured to control a heat exchange system in such a way as to transfer EV exhaust heat to the internal combustion engine, and an controller configured to let electrical power be supplied from a battery to the heater before the internal combustion engine is started if it is predicted that a specific warmed-up condition of the internal combustion engine will not be established before the start of the internal combustion engine and not to let electrical power be supplied from a battery to the heating if it is predicted that a specific warmed-up condition of the internal combustion engine will be established before the start of the internal combustion engine.

公开(公告)号：US20210215113A1

公开(公告)日：2021-07-15

申请号：US17124501

申请日：2020-12-17

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tsuyoshi OBUCHI

IPC: F02D41/14 ,  F01N11/00

Abstract: In order to detect the degree of deterioration of one catalyst with a simple configuration, a catalyst deterioration judging device for an internal combustion engine includes an upstream catalyst disposed in an engine exhaust passage, a downstream catalyst disposed in the engine exhaust passage downstream of the upstream catalyst, an inflow air-fuel ratio sensor for detecting the air-fuel ratio of an inflow exhaust gas to the upstream catalyst, an outflow air-fuel ratio sensor for detecting the air-fuel ratio of an outflow exhaust gas from the downstream catalyst, and an electronic control unit. The maximum oxygen storage amount of the upstream catalyst is detected based on the output of the inflow air-fuel ratio sensor and the output of the outflow air-fuel ratio sensor when the upstream catalyst is in the active state and the downstream catalyst is in the inactive state.

公开(公告)号：US20200232371A1

公开(公告)日：2020-07-23

申请号：US16744184

申请日：2020-01-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tsuyoshi OBUCHI ,  Shigemasa HIROOKA ,  Shingo KORENAGA

IPC: F01N9/00 ,  F01N3/20

Abstract: An abnormality detection apparatus calculates an actually supplied electrical energy defined as the integrated value of electrical power actually supplied to the electrically heated catalyst over a specific period from the time when the supply of electrical power to the electrically heated catalyst is started and a target electrical energy in the specific period, and further calculates, from these integrated values, an accomplishment parameter relating to the ratio of the actually supplied electrical energy to the target electrical energy. The abnormality detection apparatus detects an abnormality of the electrically heated catalyst by comparing the accomplishment parameter with a specific threshold. The abnormality detection apparatus is configured to set the specific threshold according to the temperature of the electrically heated catalyst at the time when the supply of electrical power is started.

公开(公告)号：US20200232372A1

公开(公告)日：2020-07-23

申请号：US16744883

申请日：2020-01-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Tsuyoshi OBUCHI ,  Shigemasa HIROOKA ,  Shingo KORENAGA

IPC: F01N9/00 ,  F01N3/20

Abstract: The controller adjusts a voltage applied to the electrically heated catalyst in such a way as to make the electrical power as the product of the applied voltage and the catalyst current equal to a target electrical power and to apply a voltage substantially equal to a specific upper limit voltage to the electrically heated catalyst when the electrical power that can be supplied to the electrically heated catalyst by applying a voltage equal to or lower than the specific upper limit voltage is lower than the target electrical power. The controller calculates an actually supplied electrical energy defined as the integrated value of the electrical power actually supplied to the electrically heated catalyst over a specific period. The controller determines that the electrically heated catalyst is abnormal if the actually supplied electrical energy is smaller than a specific electrical energy.

公开(公告)号：US20200232370A1

公开(公告)日：2020-07-23

申请号：US16744180

申请日：2020-01-16

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shigemasa HIROOKA ,  Tsuyoshi OBUCHI ,  Shingo KORENAGA

IPC: F01N9/00 ,  B60L58/12 ,  F01N3/20 ,  B60L1/02 ,  B60L50/60

Abstract: The electrically heated catalyst to which the present disclosure is applied is provided in a hybrid vehicle capable of switching its running mode between EV mode and HC mode and supplied with electrical energy before the internal combustion engine is started. An abnormality detection apparatus calculates an electrical energy parameter relating to the integrated value of electrical power actually supplied to the electrically heated catalyst (actually supplied electrical power) over a specific period of time from the time when supply of electrical power to the electrically heated catalyst is started and detects an abnormality of the electrically heated catalyst by comparing the electrical energy parameter with a threshold. The threshold is set according to the rate of decrease of the charge level of a battery (charge level decrease rate) during a period in which electrical power is supplied to the electrically heated catalyst.