Canon Kabushiki Kaisha

Toyota Jidosha Kabushiki Kaisha

Yusuke Saito

Noriyasu Adachi

Yasuhiro Shimura

Ryota Ogura

Satoru Tanaka

Yosuke Matsumoto

Satoshi Yoshizaki

Noriyasu Kobashi

Ryutaro Moriguchi

Shiro Sakata

Mitsunari Ito

Hiroshi Tanaka

Masao Watanabe

Naoya Takagi

Akira Eiraku

Hiroki Asano

Yasuhiro Kuze

Takeshi Nobukawa

Kazutaka Yaguchi

Masakatsu Nagai

Provided is an image forming apparatus including a temperature sensing circuit to which a temperature sensing element is electrically connected, wherein a surface of a heater on a side where the temperature sensing element is provided is in contact with the inner surface of a film, a heating element is provided in a primary side circuit which is electrically connected to a commercial power supply, and the temperature sensing circuit is electrically insulated from both of the primary side circuit and a secondary side circuit which is electrically insulated from the primary side circuit.

Image forming apparatus

A power source apparatus including a control unit configured to output a control signal to a switching element to switch a target voltage of an output voltage from a transformer. In a case of increasing the output voltage, the control unit outputs the control signal having a first duty when the target voltage is lower than a first threshold value, and outputs the control signal having a second duty larger than the first duty when the target voltage is switched to a value equal to or higher than the first threshold value. In a case of reducing the output voltage, the control unit outputs the control signal having the second duty when the target voltage is equal to or higher than a second threshold value, and outputs the control signal having the first duty when the target voltage is switched to a value lower than the second threshold value.

Power source apparatus and image forming apparatus having a control unit configured to switch a target voltage of an output voltage output from a secondary side of a transformer

The power supply apparatus including a high-voltage generation unit generating a DC voltage VA includes a Zener diode that drops the DC voltage VA to a DC voltage VB, a resistor connected to a line to which the DC voltage VA is output, and a voltage divider that generates a DC voltage VC by dividing the DC voltage VA with the resistor, and the voltage divider adjusts the DC voltage VC such that the potential difference between the DC voltage VB and the DC voltage VC is within a predetermined range.

Power supply apparatus and image forming apparatus

An internal combustion engine comprises an engine body, a filter provided in an exhaust passage of the engine body and trapping particulate matter in the exhaust, and a temperature sensor detecting a temperature of gas flowing cut from the filter. A control device controlling this internal combustion engine comprises a fuel cut control pan configured to perform fuel cut control stopping a supply of fuel to a combustion chamber of the engine body and a forced ending part configured to forcibly make the fuel cut control end even if a condition for performance of fuel cut control had stood based on a trend in change of temperature of the gas temperature detected by the temperature sensor.

Control device for internal combustion engine

An exhaust purification system of an internal combustion engine comprises a filterarranged in an exhaust passageof an internal combustion engine in which a plurality of cylinderscooled by cooling water are provided and trapping particulate matter in exhaust gas, a wall temperature calculation partconfigured to calculate or detect wall temperatures of a predetermined number of equal to or more than two cylinders among the plurality of cylinders, and a PM amount calculation partconfigured to calculate an amount of particulate matter discharged from the plurality of cylinders to the exhaust passage based on the wall temperatures calculated or detected by the wall temperature calculation part.

Exhaust purification system of internal combustion engine

An exhaust purification system of an internal combustion engine comprises a filter trapping particulate matter in exhaust gas, a differential pressure sensor detecting a differential pressure before and after the filter or a differential pressure between a pressure in the exhaust passage and an atmospheric pressure, a temperature sensor detecting a temperature of exhaust gas, and a deposition calculating part configured to calculate an amount of particulate matter deposited at the filter. The deposition calculating part is configured to calculate a first estimated value of an amount of the particulate matter based on the differential pressure, calculate a second estimated value of an amount of the particulate matter based on an amount of increase of temperature of the exhaust gas, and calculate an amount of the particulate matter based on the first estimated value and the second estimated value.

An image forming apparatus includes a heater including a heating element, a driving unit that supplies electrical power to the heating element, and a plurality of temperature detection portions, each detecting a temperature of the heater, and being disposed on a first circuit. A control unit controls the driving unit based on the temperatures detected by the plurality of temperature detection portions, the control unit being disposed on a second circuit, which is isolated from the first circuit. A plurality of abnormality detection circuit portions output signals corresponding to the temperatures detected by the plurality of temperature detection portions, and are disposed on the first circuits. In addition, an abnormality transmission circuit portion transmits a signal indicating an abnormality in the heater to the control unit based on the signals output by the abnormality detection circuit portions.

Image forming apparatus having plurality of temperature detection portions and a plurality of abnormality detection circuit portions

The driven rotation axis, the driving rotation axis, the ACT lever, the driving pin, the rod, the driven pin and the WGV lever constitute a linkage. In order to consider the instrumental error caused by the linkage configuration, a link ratio is defined by the equation (Link ratio=(Lwg/Lact)*(sin &#x3b2;/sin &#x3b1;), wherein Lwg is a length of the WGV lever, Lact is length of the ACT lever, &#x3b2; is an angle formed by the WGV lever and the rod, and &#x3b1; is an angle formed by the ACT lever and the rod). The current value input to the DC motor is corrected with a correction coefficient is a value obtained by dividing an actual link ratio by a target link ratio.

Boost pressure control device for internal combustion engine

Image forming apparatus that detects an abnormality in a heater based on temperatures detected by temperature detection portions

The switching power supply apparatus including a transformer includes a detection unit configured to detect that the power supply apparatus malfunctions and a first holding unit configured to turn off a first switching element and holds the first switching element at turn-off condition, and when the detection unit detects that malfunction occurs, the first holding unit releases the first switching element from the turn-off condition at a timing when the control unit turns on the second switching element by a second control signal.

Power supply apparatus and image forming apparatus controlling switching elements based on detection of a malfunction

A target air amount for achieving a requested torque is back-calculated from the requested torque using a virtual air-fuel ratio. The virtual air-fuel ratio is changed from a first air-fuel ratio to a second air-fuel ratio in response to a condition for switching an operation mode from operation in the first air-fuel ratio to operation in the second air-fuel ratio being satisfied. After the virtual air-fuel ratio is changed from the first air-fuel ratio to the second air-fuel ratio, an interval of time passes and the target air-fuel ratio is then switched from the first air-fuel ratio to a third air-fuel ratio that is an intermediate air-fuel ratio between the first air-fuel ratio and the second air-fuel ratio. The target air-fuel ratio is temporarily held at the third air-fuel ratio, and is thereafter switched from the third air-fuel ratio to the second air-fuel ratio.

In a multiple cylinder supercharged engine, when reduced cylinder operation is executed, a throttle, which is located downstream of a compressor driven by a turbine provided in an exhaust passage, through which exhaust gas of a cylinder group flows, is operated to a fully closed state, wherein the reduced cylinder operation is applied to the cylinder group. A fuel injection amount of at least one cylinder included in the cylinder group is made smaller than a fuel injection amount of a cylinder included in another cylinder group, and this at least one cylinder is operated, in order to increase rotational speed of the compressor, so that a value of pressure of an upstream side of the throttle is controlled to a value, which is equal to or larger than a value of pressure of a downstream side of the throttle.

Growing community of inventors

Susono, Japan

Yusuke Saito