公开(公告)号：US20220332305A1

公开(公告)日：2022-10-20

申请号：US17657868

申请日：2022-04-04

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shigemasa HIROOKA ,  Koichi KITAURA ,  Yoshio YAMASHITA ,  Shingo KORENAGA ,  Katsuhiro ITO ,  Hikaru SHIOZAWA

IPC: B60W20/13 ,  F01N3/20

Abstract: A control device starts supply of electric power to a catalyst device when a state of charge of a main battery decreases to a value which is equal to or less than an optimal power-supply state of charge set based on a travel load while a vehicle is traveling in an EV travel mode. The control device corrects input electric power of the catalyst device to a value less than the value at the time of starting of supply of electric power when the travel load decreases after the supply of electric power has been started.

公开(公告)号：US20210222638A1

公开(公告)日：2021-07-22

申请号：US17101111

申请日：2020-11-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shigemasa HIROOKA ,  Shingo KORENAGA

IPC: F02D41/02 ,  F01N3/20 ,  F01N9/00

Abstract: A control device comprises a catalyst warmup control part configured to supply electric power to a conductive base to warm up a catalyst device. The catalyst warmup control part is provided with a first estimating part configured to estimate a temperature of the conductive base based on an engine operating state, a second estimating part configured to estimate a temperature of the conductive base based on a resistance value of the conductive base detected when supplying current to the conductive base, and an electric power control part configured to control an amount of electric power supplied to the conductive base when warming up the catalyst device based on a result of comparison of magnitudes of a first estimated temperature of the conductive base estimated by the first estimating part and a second estimated temperature of the conductive base estimated by the second estimating part.

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.

公开(公告)号：US20190271253A1

公开(公告)日：2019-09-05

申请号：US16289663

申请日：2019-03-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Shigemasa HIROOKA

IPC: F01N9/00 ,  B60W10/06 ,  B60W10/26 ,  B60W20/15

Abstract: Disclosed is an exhaust purification system for an internal combustion engine applied to a hybrid vehicle that performs EV travel after system power is turned on. The exhaust purification system includes: an exhaust purification catalyst; a heating element configured to generate heat with reception of power to heat the exhaust purification catalyst; a battery configured to supply the power to a motor and the heating element; a sensing unit configured to sense riding of an occupant in the hybrid vehicle; and a controller configured to execute first control to control the supply of the power from the battery to the heating element so that the power of electric energy of a prescribed ratio among activation electric energy is supplied to the heating element when the riding of the occupant is sensed by the sensing unit and a storage amount of the battery is larger than a second storage amount.