Toyota Jidosha Kabushiki Kaisha

Tametoshi Mizuta

Makoto Ogiso

Hideyuki Nishida

Keiji Yoeda

Isao Matsumoto

Kazuhiko Shiratani

Shoji Katsumata

Tomihisa Oda

Kunihiko Hayashi

Hideo Kobayashi

Katuhiko Arisawa

Yoshio Yamashita

Takanori Ueda

Kuniaki Niimi

Takashi Karita

An exhaust gas purifying apparatus for an internal combustion engine comprises a casing which forms a part of an exhaust passage of the internal combustion engine and houses therein an occlusion-reduction type NOx catalyst and a reducing agent supply device which supplies a reducing agent to an interior of the casing on an upstream side of the NOx catalyst. The reducing agent supply device injects the reducing agent in a flat form in a direction intersecting a center line of the NOx catalyst from a nozzle hole disposed in the casing.

Exhaust gas purifying apparatus for internal combustion engine

A dual-chamber oil pan includes an oil pan provided below an engine block, an oil pan separator that is provided within the oil pan and defines a first chamber communicating with the engine block, and a second chamber provided around the first chamber, and a suction port disposed within the first chamber. The first chamber includes a large-capacity portion including a bottom portion of the oil pan separator, and a small-capacity portion located above and integrally formed with the large-capacity portion.

Dual-chamber type oil pan and engine equipped with same

A method of operating an internal combustion engine having an; electromagnetically driven intake valves for a vehicle. With the method, deviation of an opening operation of the electromagnetically driven intake valve in response to a command signal for opening the intake valve from a predetermined characteristic is detected, and at least one of parameters used for controlling operation of the internal combustion engine is corrected so as to reduce a change in an intake air charging state in which the internal combustion engine is charge with the intake air. A valve closing timing of the intake valve or a valve closing timing of the exhaust valve that cooperates with the intake valve may be used as parameters to be corrected.

Method of operating internal combustion engine including electromagnetically driven intake valves

A control method with variable feedback gain for energization of an electro-magnetically driven intake/exhaust valve of an internal combustion engine increases opening and closing speeds of the intake/exhaust valve driven with electromagnets having small capacity and brings the final speed of the opening and closing action of the valve close to zero. A target moving speed of the armature relative to the electromagnets is determined dependent upon a spacing distance of the armature from the electromagnet; at least a part of energization of the electro-magnetically driven valve is controlled through feedforward control so as to make an actual moving speed of the armature relative to the electromagnets in conformity with the target moving speed while at least the other part of the energization is controlled through feedback control based upon a deviation of the actual moving speed from the target moving speed.

Method of controlling energization of electro-magnetically driven valve with variable feedback gain

A rush adjuster which adjusts a relative position between a valve body and an armature in an axial direction so that a state of zero-rush is formed is arranged between an armature shaft and a valve shaft. At a time of starting an electromagnetic drive valve, a first starting current is applied to either one of an upper coil and a lower coil for generating electromagnetic forces for attracting the armature closer, whichever a distance with respect to the armature is shorter.

Control apparatus of electromagnetic drive valve and control method of the same

When a displacement of an armature of an electromagnetically driven valve fails to reach a predetermined threshold value even after an elapse of a predetermined time from switching opening/closing of the valve, it is determined that step-out has occurred or step-out is about to occur and then the valve opening/closing control is changed. The valve opening/closing control is changed, for example, by interrupting application of current to the valve for attracting the armature released from the other valve.

Growing community of inventors

Susono, Japan

Tametoshi Mizuta