Nippondenso Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Toyoda Jidosha Kabushiki Kaisha

Tatsunori Kato

Naoki Taki

Shigenori Isomura

Atsushi Watanabe

Katsuhiko Kodama

Minoru Ohta

Mitsuru Takada

Takeshi Matsumura

Makoto Shirai

Junya Morikawa

Katsuhiko Kawai

Toshihiro Suzumura

Hirokatsu Mukai

Koji Okawa

Naochika Nunogaki

Masahiko Tajima

Mayumi Otsuka

Atsushi Niwa

Hiroyuki Tatebayashi

Akihiro Oka

In a remote operation system in which an in-vehicle unit is controlled by an operation command transmitted from a portable unit carried by a driver via a service center, when the vehicle receives an operation command B for controlling the in-vehicle unit from a second state to a first state, the operation command B is executed only when control based on an operation command A for controlling from the first state to the second state is made.

Remote operation system, remote operation apparatus and service center

A remote control apparatus for a vehicle according to the invention includes a portable-device determination unit, and a distance determination unit. The portable-device determination unit determines whether a first portable device, which can remotely control a vehicle function, is present in the vehicle. The distance determination unit determines whether a distance between the user of the vehicle and the vehicle is greater than or equal to a predetermined distance. When the portable-device determination unit determines that the first portable device is present in the vehicle, and the distance determination unit determines that the distance between the user and the vehicle is greater than or equal to the predetermined distance, the remote control apparatus permits a second portable device, which can remotely control a vehicle function, to remotely control the vehicle function.

Remote control apparatus

A vehicle remote control apparatus () for causing a vehicle () to perform a requested operation in response to a remote operation request from a vehicle user includes a location identifying unit () configured to identify a latest vehicle location where the vehicle is parked, and a decision unit configured to decide whether it is acceptable to cause the vehicle to perform an operation requested from the vehicle user at the latest vehicle location identified by the location identifying unit.

Vehicle remote control apparatus and method

An air-fuel ratio control apparatus constructed, in an engine of a type storing evaporated fuel generated in a fuel tank in a canister and thereafter drawing off the evaporated fuel to an intake side of an engine through a bleedoff passage, so as to inhibit renewal of an air-fuel ratio learning value when the evaporated fuel concentration is at a predetermined value or higher in case of learning and renewal of an air-fuel ratio in order to make feedback control of the air-fuel ratio of an air-fuel mixture supplied to the engine. In an apparatus which adsorbs evaporated fuel generated in a fuel tank in a canister and purges the evaporated fuel adsorbed in the canister to an intake side of an internal combustion engine together with air through a purge valve, an air-fuel ratio learning value is renewed in accordance with a deviation between an air-fuel ratio feedback FAF value detected by an oxygen sensor and a FAFSM value obtained by smoothing the FAF value with a large smoothing constant. Further, renewal of the air-fuel ratio learning value is inhibited when the concentration of the evaporated fuel is high, and renewal of the air-fuel ratio learning value is executed even during purge execution by the purge valve when the concentration is low.

Air-fuel ratio control apparatus for internal combustion engine

The present invention pertains to a method for producing a mixture including an injected engine fuel from an injector, a combustion engine intake-air and an evaporative gas from the engine fuel. The method includes the steps of measuring a characteristic of the evaporative gas and changing step for changing a mixing ratio of the evaporative gas to at least one of the injected engine fuel and the combustion engine intake-air, according to the measured characteristic of the evaporative gas, by changing a flow rate of the combustion engine intake-air.

Method for producing fuel/air mixture for combustion engine

An air-fuel ratio control apparatus for an internal combustion engine for learning and controlling an air-fuel ratio accurately even during execution of purging of evaporated fuel. The evaporated fuel generated in a fuel tank is adsorbed to a canister, and the adsorbed fuel is evaporated and purged together with air to the intake side of the internal combustion engine through a purge valve. During normal purge rate control by the purge valve, air-fuel ratio feedback values detected by an oxygen sensor are averaged, and the concentration of the evaporated fuel taken into the internal combustion engine through the purge valve is detected by the deviation from a stoichiometric air-fuel ratio 1 of the averaged value and the purge rate. Further, after the lapse of a predetermined period of time after purging is started, air-fuel ratio learning values are renewed in accordance with the air-fuel ratio feedback value and stored in a RAM.

Air-fuel ratio control apparatus of internal combustion engine

An engine control apparatus comprises: an actual control condition detector for detecting an actual control condition of an engine; an adjusting device for adjusting the actual control condition of the engine; and a controller for controlling the adjusting device such that the actual control condition of the engine is controlled to a target control condition using a state variable amount and a feedback constant determined on the basis of a dynamic model of the engine, wherein the controller has: a predicated control condition operation circuit for operating a predicted control condition on the basis of the dynamic model of the engine; a deviation operation circuit for operating a deviation of the predicated control condition from the target control condition; a changing circuit for changing control of the controller such that fluctuations of the control condition become small in accordance with a judgement made such that an error of the dynamic model exceeds a tolerance when the deviation exceeds a predetermined value. According to this invention, there is an advantage effect that fluctuation of the engine speed is suppressed because of prevention of hunting due to reduction of variation in the control amount.

Engine control apparatus

Growing community of inventors

Nagoya, Japan

Tatsunori Kato