Honda Giken Kogyo Kabushiki Kaisha

Honda Motor Co., Ltd.

Yuji Fujiki

Sachito Fujimoto

Kojiro Tsutsumi

Gaku Hatano

Ken Ogawa

Yuta Takada

Isao Komoriya

Katsuya Yashiro

Takashi Watanabe

Yasunari Seki

Hiroshi Hasebe

Hiroshi Tagami

Fumio Hara

Kentaro Ishisaka

Toru Kokaki

Hideo Moriwaki

Takafumi Hirose

Masahiro Takeuchi

Minoru Torii

Yoshiharu Abe

Masaya Ikeda

Toshitaka Hachiro

Haruo Shimamura

Norio Tomobe

Shigeto Kashiwabara

Hisashi Daicho

Yoshiaki Matsuzono

Osamu Takizawa

Daiki Nishida

Yutaka Taniguchi

Kunihiro Morishita

Junpei Yashima

Kozo Suzuki

Hisato Shimizu

Masahiro Yamada

Hideharu Takemoto

Keiji Enomoto

Toshio Sato

A vehicle control system includes a vehicle, an information terminal apparatus that can provide, on a display unit, a plurality of contents which provide training on an operation method of the vehicle, and a server that can communicate with the vehicle and the information terminal apparatus. The information terminal apparatus includes a display control unit configured to cause the display unit to display a first content that provides training on an operation method including a method to start an operation of a specific function of the vehicle and a second content that provides, to a user of the vehicle who has been trained by the first content and is registered in the server, training on an operation method corresponding to a phenomenon that can occur while the specific function is provided.

Vehicle control system and vehicle

An apparatus for performing a display indicating a state of fuel efficiency of a vehicle according to a driving operation, detects an operating state of the vehicle according to a driving operation performed by a driver of the vehicle. A score for representing the state of fuel efficiency of the vehicle according to the driving operation is determined. Here, the score is allocated to correspond to the operating state. A display indicating the score is performed as the display indicating the state of fuel efficiency. The allocation of the score to the operating state of the vehicle is changed according to a value obtained by accumulating the score. For example, the allocation of the score to the operating state is changed such that the score is lower as the value obtained by accumulating the score is higher. Thus, a degree of strictness with which the score is marked is higher as the level of the driving skill represented by the accumulated value is higher.

Apparatus for promoting improvement of driving skill to improve fuel efficiency

An air flow sensor failure determination apparatus for determining a failure of an air flow sensor for an internal combustion engine in which an air flow sensor, a throttle and a pressure sensor disposed downstream of the throttle are provided in an air induction passage, the air flow sensor failure determination apparatus comprising a first calculating unit for calculating a first induction air volume based on an output signal from the air flow sensor, a second calculating unit for calculating a second induction air volume based on an output from the pressure sensor, and a determination unit for determining a failure of the air flow sensor based on a comparison between the first induction air volume and the second induction air volume.

Air flow sensor failure determination apparatus and method

There is provided a control system for an internal combustion engine, which is capable of matching an output torque of the engine with a demanded torque excellently when the combustion mode is switched, thereby enhancing drivability. A demanded fuel amount and a demanded torque of the engine are calculated according to detected operating conditions of the engine. A combustion mode is determined to be either the stratified combustion mode or the homogeneous combustion mode according to the demanded torque. A pre-switching demanded fuel injection time period and a pre-switching demanded torque are stored. When the combustion mode is switched, a switching-time demanded fuel amount (limit value) is calculated according to the stored pre-switching demanded fuel injection time period and pre-switching demanded torque, the current demanded torque, and an estimated combustion efficiency parameter.

Control system and method for internal combustion engine

A misfire state discrimination system of an internal combustion engine, which determines the occurrence of misfire under engine operating conditions that make misfire determination possible and counts the number of misfires to compare with a reference value. The misfire state of the engine is discriminated based on the result of comparison. In the system, when the engine operation moves from the conditions that makes the misfire determination possible, the count is saved and is counted up from the count when the engine operation returns to the condition. The saved count is also retained when the engine is stopped. Similarly, the number of combustion during which the determination of misfire occurrence is made is counted and the count is saved. This arrangement enables a rapid and accurate discrimination of the misfire state of the engine.

Misfire state discrimination system of internal combustion engine

A catalyst deterioration-determining system for an internal combustion engine has a catalyst arranged in the exhaust system, for purifying exhaust gases emitted from the engine, an oxygen concentration sensor arranged in the exhaust system at a location downstream of the catalyst, for detecting the concentration of oxygen present in the exhaust gases, and an ECU which controls the air-fuel ratio of an air-fuel mixture supplied to the engine in a feedback manner in response to the output from the oxygen concentration sensor. Determination of deterioration of the catalyst is carried out based on the output from the oxygen concentration sensor during execution of air-fuel ratio feedback control. An inversion period parameter representative of a repetition period of change in the output from the oxygen concentration sensor over a predetermined diagnosis period is measured, and a determination parameter is calculated by averaging values of the inversion period parameter measured over different diagnosis periods as the predetermined diagnosis period. The determination of deterioration of the catalyst is carried out based on the determination parameter.

Catalyst deterioration-determining system for internal combustion engines

An air-fuel ratio sensor deterioration-detecting system is provided for an internal combustion engine having first and second air-fuel ratio sensors arranged in the exhaust system upstream and downstream of a catalytic converter therein. An ECU calculates a control parameter, based on an output from the second air-fuel ratio sensor, calculates an air-fuel ratio correction amount, based on an output from the first air-fuel ratio sensor and the calculated control parameter, and executes air-fuel ratio feedback control, based on the calculated air-fuel ratio correction amount. The ECU also determines deterioration of the second air-fuel ratio sensor, based on the output from the same in such a manner that the air-fuel ratio correction amount is increased or decreased by a predetermined amount, based on the output from the second air-fuel ratio when a variation in the second air-fuel ratio sensor output falls within a predetermined small variation range during execution of the air-fuel ratio feedback control, and the second air-fuel ratio sensor is determined to be deteriorated when the output variation falls within the predetermined small variation range even after the increase or decrease of the air-fuel ratio correction amount.

Air-fuel ratio sensor deterioration-detecting system for internal

A method for controlling the air-fuel ratio in internal combustion engines, in which a low and/or decelerating engine speed is detected according to a change speed of engine operation parameters and the degree of opening of a flow regulating valve is controlled according to such change speed when deceleration is detected.

Method for controlling the air-fuel ratio in vehicle internal combustion

An air-fuel ratio control method which controls the amount of the intake side secondary air in accordance with either the engine temperature or both of the engine temperature and the intake air temperature upon the engine re-start under a high engine temperature, thereby avoiding enrichment of the intake air-fuel ratio even at the occurrence of the percolation phenomenon and to improve the engine-start property. Furthermore, the amount of the intake side secondary air is controlled until the start of the air-fuel ratio feedback control to accomplish improvement in the purification of the exhaust gases and in the stability of the engine speed at an idle state.

Air-fuel ratio control method for an internal combustion engine

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Wako, Japan

Yuji Fujiki