Toyota Jidosha Kabushiki Kaisha

Yoshiyuki Sakamoto

Hiromasa Nishioka

Akira Kato

Hiroshi Otsuki

Hirohito Hirata

Keishi Takada

Tetsuya Sakuma

Yasutaka Nagai

Yuji Sakakibara

Takashi Kuzuya

Tsuyoshi Hamaguchi

Chika Kato

An internal combustion engineis provided, in an exhaust passage thereof with an electrochemical reactor including: an ion conductive solid electrolyte layer; an anode layer arranged on a surface of the solid electrolyte layer; and a cathode layer arranged on a surface of the solid electrolyte layer and able to hold NO. The engine includes a current control device for controlling the current supplied to the electrochemical reactor so as to flow from the anode layer through the solid electrolyte layer to the cathode layer. The current control device is configured so as to supply current to the electrochemical reactor at least temporarily while that internal combustion engine is stopped.

Internal combustion engine provided with electrochemical reactor and vehicle mounting internal combustion engine

An exhaust gas purification apparatus for an internal combustion engine, includes an oxygen ion conductor which can conduct oxygen ions when a voltage is applied to the conductor and a NOx absorption/discharge device. The NOx absorption/discharge device is formed by a first electrode provided on a first surface of the oxygen ion conductor and a second electrode including silver and provided on a second surface of the oxygen ion conductor opposite to the first surface across the oxygen ion conductor. The apparatus applies a voltage between the first and second electrodes such that oxygen ions move through the oxygen ion conductor from the first electrode toward the second electrode when satisfied is a purification condition that nitrogen oxide discharged from the NOx absorption/discharge device can be purified in the exhaust passage.

Exhaust gas purification apparatus of internal combustion engine

Growing community of inventors

Nagakute, Japan

Yoshiyuki Sakamoto