Toyota Jidosha Kabushiki Kaisha

Hayashi Telempu Co., Ltd.

Takuya Matsumoto

Akihiro Katayama

Yasushi Iwazaki

Takashi Nakamura

Yuki Ikejiri

Hiroshi Sawada

Yusuke Kawamura

Takeho Aisaka

Makoto Sato

Toru Kidokoro

Hiroshi Miyamoto

Masashi Hakariya

Yoshihisa Oda

Isao Nakajima

Tatsuro Shimada

Tetsuya Kono

Tatsuo Mase

Tadayoshi Kamei

Hiroyoshi Konishi

The electric power generating device includes a first generator, a differential gear mechanism provided between a blade and the first generator, a first ring gear connected to the first generator, and a case that rotates integrally with the first ring gear about a first axis. The differential gear mechanism includes a pinion shaft that rotatably supports a pair of pinion gears about a second axis perpendicular to the first axis. The differential gear mechanism includes a first drive shaft having a first side gear at one end and a blade connected to the other end. The differential gear mechanism comprises a second drive shaft having a second side gear at one end and having an interference portion at one end extending toward the pinion shaft. The interference portion faces the pinion shaft in a direction of a third axis that is orthogonal to the first axis and the second axis.

Electric power generating device

A transmission ratio controller includes circuitry including a transmission ratio calculator and a monitor. The transmission ratio calculator calculates a transmission ratio using a first transmission ratio map when a specified parameter satisfies a first condition, and using a second transmission ratio map when the specified parameter satisfies a second condition. When the specified parameter satisfies the first condition, the internal combustion engine is in a first state. When the specified parameter satisfies the second condition, the internal combustion engine is in a second state. In the first state, the monitor calculates a hypothetical transmission ratio using the second transmission ratio map based on the second state. On a condition that the transmission ratio calculated in the first state differs from the hypothetical transmission ratio by a predetermined reference value or greater, the monitor determines that the transmission ratio has a possibility of differing in accordance with the specified parameter.

Transmission ratio controller and method for determining transmission ratio

A transmission ratio controller includes circuitry that includes a transmission ratio calculator calculating a request transmission ratio, a transmission ratio instructor transmitting a control signal, and an abnormality determiner. The request transmission ratio is calculated using a first transmission ratio map when a specified parameter satisfies a first condition, and a second transmission ratio map when the specified parameter satisfies a second condition. The internal combustion engine is in a first state when the specified parameter satisfies the first condition, and in a second state when the specified parameter satisfies the second condition. In the first state, the abnormality determiner calculates a hypothetical transmission ratio using the second transmission ratio map based on the second state. The abnormality determiner determines an abnormality based on a comparison of the hypothetical transmission ratio with at least one of the request transmission ratio, an instruction transmission ratio, or an actual transmission ratio.

Transmission ratio controller and method for determining transmission ratio abnormality

A transmission ratio controller includes circuitry. The circuitry includes a transmission ratio calculator configured to calculate a request transmission ratio to a transmission mechanism, a transmission ratio instructor configured to output a control signal based on the request transmission ratio, and an abnormality determiner configured to determine whether a transmission ratio of the transmission mechanism is abnormal. At least two of the request transmission ratio, an instruction transmission ratio corresponding to the control signal, or an actual transmission ratio achieved by the transmission mechanism are transmission ratios subject to comparison. The abnormality determiner is configured to determine that when a difference obtained by comparing the transmission ratios subject to comparison is greater than or equal to a predetermined specified value, the transmission ratio of the transmission mechanism is abnormal.

A plug for a vehicle includes: a body portion; a plurality of insertion portions configured to be inserted into a through-hole provided in a housing; and a flange portion having a notch formed on an outer periphery so as to restrict a rotation of the body portion around an axial center. The insertion portions are formed at two positions opposed to each other across a straight line passing through the notch and the axial center and are provided with retaining lugs engageable with the through-hole.

Plug for vehicle

A supercharging system includes a waste gate valve and an ECU. The ECU is configured to: calculate a first parameter and a second parameter, each of which has a positive correlation with an intake air amount; obtain a first difference by subtracting a first boost pressure from a second boost pressure; obtain a second difference by subtracting the first parameter from the second parameter; obtain a quotient by dividing the first difference by the second difference; and determine that a malfunction occurs in the waste gate valve when the quotient is larger than a threshold value.

Supercharging system

A light-emitting accessory including: a light source; a light guide body that guides the light radiated from the light source; a case body that holds the light source and the light guide body and has an attachment to an outside thereof; a cover body formed by a light permeable material and being attached to the case body to cover the light source and the light guide body. The light guide body has a back surface facing the light source, and a front surface opposite to the back surface. In the vicinity of the center of the front surface is made an inclined portion which is inclined in a direction of thickness of the light guide body, and the light source confronts the inclined portion.

Light-emitting accessory having a light guide body with an inclined portion

A fuel injection amount control apparatus comprises an air-fuel ratio sensor disposed between an exhaust gas merging portion and an upstream catalyst. The control apparatus performs a feedback correction on an amount of fuel to be injected by the fuel injection valve so that an air-fuel ratio represented by the output value of the upstream air-fuel ratio sensor becomes equal to a target air-fuel ratio set at stoichiometric air-fuel ratio. The control apparatus obtains an air-fuel ratio imbalance indicating value, which becomes larger as a difference in air-fuel ratio of each of the mixtures supplied to each of the combustion chambers among the cylinders becomes larger, and performs an increasing correction to the instructed fuel injection amount in such a manner that an air-fuel ratio determined by the instructed fuel injection amount becomes richer than the stoichiometric air-fuel ratio as the obtained air-fuel ratio imbalance indicating value increases.

Fuel injection amount control apparatus for an internal combustion engine

A supercharging system includes an internal combustion engine, a supercharger, and an electronic control unit configured to compute an integrated value of the intake air amount during a predetermined period on the basis of a detected result of a first sensor. The predetermined period is a period from a start of an increase in the supercharging pressure to an end of the increase at the time when the intake air amount is increased in a state where no command to reduce the supercharging pressure by a supercharging pressure reduction mechanism is issued. The electronic control unit is configured to acquire a peak supercharging pressure from a detected result of a second sensor. The electronic control unit is configured to determine whether the supercharging system has an abnormality on the basis of the integrated value of the intake air amount and the peak supercharging pressure.

Supercharging system and diagnostic method for supercharging system

An electronic control device calculates the maximum actual oxygen storage capacity of a catalyst. The gradient of a linear expression formed between the catalyst temperature and the maximum oxygen storage capacity of the catalyst is stored for each degradation level of the catalyst. The gradient can be learned in accordance with the same temperature of the catalyst and the maximum actual oxygen storage capacity. When the maximum actual oxygen storage capacity is calculated, it is revised in accordance with the temperature of the catalyst, a reference temperature, the linear expression, and the learned gradient. The revised maximum oxygen storage capacity which is the maximum oxygen storage capacity when the temperature of the catalyst during the same calculation period is equal to the reference temperature is then calculated. If a response delay is detected in the output of an oxygen sensor, the gradient of the learned linear expression is discarded.

Device for purifying exhaust gas of internal combustion engine

The fact that 'with respect to a process in which the output value of a downstream air-fuel ratio sensor (sensor output value) is inverted from the minimum output value to the maximum output value during execution of an active control, the local maximum and minimum values of the secondary differential value of the sensor output value is widely affected by the size of the response delay of the downstream air-fuel ratio sensor and the size of the degree of the degradation of the three-way catalyst' is utilized. By preliminarily acquiring and memorizing, as maps, these relations obtained through an experiment, and applying the 'local maximum and minimum values of the secondary differential value of the sensor output value' calculated from the transition of the sensor output value acquired during execution of the active control to the maps, the response delay (time constant) of the downstream air-fuel ratio sensor is acquired.

Apparatus for acquiring responsibility of oxygen concentration sensor

A determination oxygen storage amount used to determine whether a catalyst is degraded is a value obtained by applying a correction amount for removing error caused by response delay time of an output signal of an oxygen sensor to an oxygen storage amount calculated every short time. The correction amount is a value that is calculated using slopes stored in memory, i.e., the slopes for the number of storage cycles (&#x3e;the short time) corresponding to the response delay time, or the like, and becomes more accurate as a value corresponding to the error as the storage cycle becomes relatively shorter with respect to the response delay time and the number of the slopes stored in the memory increases. The necessary storage capacity of the memory is inhibited from increasing excessively even if the number of the slopes stored in the memory is large.

Catalyst degradation detection apparatus and catalyst degradation detection method

A malfunction diagnosis system includes: a malfunction diagnosis section that performs a malfunction diagnosis for an on-board device of an electric vehicle when supplied with electric power from either an electric storage section or an external power source; a malfunction diagnosis request section that requests the malfunction diagnosis section to carry out malfunction diagnosis; an external power source connector that supplies electric power from the external power source; and an external power source connection determination section that determines whether the external power source connector is connected to the external power source. The malfunction diagnosis request section changes at least either the number of times that the malfunction diagnosis section is requested to carry out malfunction diagnosis or the period of time the malfunction diagnosis section is requested to carry out malfunction diagnosis depending whether the external power source connector is connected to the external power source.

Malfunction diagnosis system and malfunction diagnosis method for electric vehicle on-board device

An engine ECU of a failure diagnosis system for an EGR device starts the EGR device by opening an EGR valve upon establishment of monitor conditions, detects an actual intake pipe pressure PMON based on a value of a vacuum sensor upon elapse of a predetermine time, calculates an estimated intake pipe pressure PMON using a physical model, cuts the EGR operation by changing the opened state to the closed state of the EGR valve, detects an actual PMOFF based on an input value of the vacuum sensor upon elapse of a predetermined time from cut of EGR, calculates an estimated PMOFF using the physical model, and determines the operation of the EGR device as being normal when a result of comparing a difference between the estimated PMON and estimated PMOFF with a difference between the actual PMON and actual PMOFF is smaller than a predetermined value.

Failure diagnosis system for exhaust gas recirculation device

An engine ECU of a failure diagnosis system for an EGR device fixes a VVT to a most retarded position upon establishment of a failure monitor condition of the EGR device, starts the EGR device, measures an actual intake pipe pressure PMON upon elapse of a predetermined time after start of EGR device, stops the EGR device, measures an actual intake pipe pressure PMOFF upon elapse of a predetermined time after stop of EGR device, and determines that the EGR device is normally operated when a value obtained by subtracting the actual PMOFF in OFF state of the EGR device from the actual PMON in ON state of the EGR device is larger than a predetermined judgment value.

Growing community of inventors

Miyoshi, Japan

Takuya Matsumoto