Toyota Jidosha Kabushiki Kaisha

Tsuyoshi Obuchi

Shigemasa Hirooka

Shingo Korenaga

Kazuya Takaoka

Kotaro Hayashi

A control device for an internal combustion engine includes a filter for collecting PM in an exhaust pipe connected to an engine body, and a PM regeneration function for regenerating the filter for collecting PM. The control device of the internal combustion engine includes a filter differential pressure acquisition unit that acquires a filter differential pressure, a pre-regeneration filter differential pressure acquired by the filter differential pressure acquisition unit prior to regeneration of the filter, a pre-post regeneration differential pressure difference acquisition unit that acquires a pre-regeneration differential pressure difference that is a difference between a post-regeneration filter differential pressure acquired by the filter differential pressure acquisition unit after regeneration of the filter, and a PM generation function determination unit that performs an anomaly determination of PM regeneration function when the acquired pre-regeneration differential pressure difference is equal to or less than a preset threshold.

Control device for internal combustion engine

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.

Control apparatus for hybrid vehicle

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.

Abnormality detection apparatus for electrically heated catalyst

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.

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.

In a control apparatus for an internal combustion engine in which an SCR catalyst is arranged in an exhaust passage, a dummy determination processing to determine whether the selective catalytic reduction catalyst is mounted at a location is carried out, based on a temperature difference between a temperature of exhaust gas flowing into the location where the selective catalytic reduction catalyst is to be arranged and a temperature of exhaust gas flowing out of the location, after starting of the internal combustion engine, wherein when a period of time for the temperature of the selective catalytic reduction catalyst to become equal to or less than a fixed temperature is equal to or more than a predetermined period of time, the dummy determination processing is carried out, whereas when the period of time is less than the predetermined period of time, the dummy determination processing is not carried out.

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Susono, Japan

Tsuyoshi Obuchi