Other

Nippon Soken, Inc.

Toyota Jidosha Kabushiki Kaisha

Naohisa Oyama

Shigeki Daido

Mamoru Yoshioka

Shinya Hirota

Toshiaki Tanaka

Kazuhiro Itoh

Koichiro Nakatani

Takuji Matsubara

Kazuhiko Shiratani

Shinji Tsuji

Fumihiko Sato

Takayuki Takeuchi

Kenji Takigawa

Hitoshi Hayashi

Juji Suzuki

Hitoshi Kato

Takayuki Shibuya

Kodo Kawase

Yoshihiko Hyoudo

Yoshitada Kodama

A filterfor collecting PMs, a microwave transmitterfor emitting electromagnetic waves whose frequency is dozens of GHz-a few of THz onto the filter, a microwave receiverfor detecting an intensity of the electromagnetic waves that have transmitted through the filter, and a computing means for computing a collection amount of PMs from the intensity that has been detected with the microwave receiverare included. Since it is possible to detect the distribution of the collection amount of PMs with good accuracy, it is possible to carry out a recycling process in a state where the collection amount does not become too much, and thereby it is possible to make a reducing-agent supply amount into exhaust gases minimum at the time of the recycling process.

Collection-amount detection method for particulate matters and collection-amount detection apparatus therefor and exhaust-gas converting apparatus

Correction of a fuel injection amount in an internal combustion engine during purge of evaporative fuel is performed on the basis of an output from an intake-oxygen concentration sensor disposed in an intake passage of the internal combustion engine. If the amplitude of fluctuations in engine speed becomes equal to or greater than a predetermined value, it is determined that there is an anomaly in engine output. In addition, if an anomaly in engine output is detected during purge and if no anomaly in engine output is detected during stoppage of purge, an ECU determines that an anomaly has occurred in the intake-oxygen concentration sensor, cancels correction of the fuel injection amount based on an output from the intake-oxygen concentration sensor during purge, and corrects the fuel injection amount on the basis of outputs from exhaust-gas air-fuel ratio sensors.

Combustible-gas sensor, diagnostic device for intake-oxygen concentration sensor, and air-fuel ratio control device for internal combustion engines

Carbon-containing suspended particulates in exhaust gas from an internal combustion engine are collected by a heat-resistant filter, and are burned on the filter. It is determined whether there is a need to increase the temperature of the heat-resistant filter. If it is necessary to increase the filter temperature, the dynamic pressure on the filter is increased. The conceivable cases where a filter temperature increase is needed includes a case where the exhaust gas temperature is low, a case where the filter is clogged to some extent, etc. If the dynamic pressure on the heat-resistant filter is increased, the filter temperature rises. Therefore, particulates can be effectively removed from exhaust gas while the clogging of the heat-resistant filter is avoided.

Emission control apparatus and emission control method

A reducing agent for use in an internal combustion engine is a mixture of an ammonia-derived solid reducing material and a water-insoluble liquid in which the solid reducing agent is immersed. A reducing-agent supply device is provided for supplying a denitration catalyst with the reducing agent, such that the reducing agent is introduced into a portion of an exhaust passage of the internal combustion engine which is upstream of the denitration catalyst.

Reducing agent for emission control system, reducing-agent supply device, and emission control system using the reducing agent

Antiferroelectric liquid crystals represented by the following formula (1) and (2). ##STR1## In the formula (1), each of m and n is an integer satisfying 6.ltoreq.m.ltoreq.14 and 2.ltoreq.n.ltoreq.10, and each of Z.sub.1, Z.sub.2 and Z.sub.3 is independently a substituent selected from the group consisting H, F, Cl, Br, CN and CH.sub.3. ##STR2## In the formula (2), each of m and n is an integer satisfying 6.ltoreq.m.ltoreq.14 and 3.ltoreq.k.ltoreq.10, and each of Z.sub.1, Z.sub.2 and Z.sub.3 is independently a substituent selected from the group consisting H, F, Cl, Br, CN and CH.sub.3.

Antiferroelectric liquid crystal composition

Growing community of inventors

Okazaki, Japan

Naohisa Oyama