Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Shinsuke Aoyagi

Shuichi Iwata

Naoyuki Kishimoto

Sho Nakamura

Taku Ibuki

Masanori Shimada

Hiroshi Arisawa

Masayuki Itou

Atsushi Hayashi

Junichi Murase

Keita Kinoshita

A fuel cell unit includes: a fuel cell stack including: a cell stack; a first terminal respectively disposed at a first end of the cell stack in the first direction; and a second terminal disposed at a second end of the cell stack in the first direction, an end plate disposed at a side opposite to the cell stack with respect to the first terminal; a power converter that converts output power of the fuel cell stack; a stack case that houses the fuel cell stack; a power converter case that houses the power converter and is fixed to the stack case; a first bus bar that electrically connects the first terminal and the power converter in the stack case and the power converter case; and a second bus bar that electrically connects the second terminal and the power converter in the stack case and the power converter case.

Fuel cell unit

Positive and negative power terminals protrude from a power terminal arrangement surface not facing a capacitor element. Positive and negative electrode bus bars gather with each other after at least one of them extends along a non-electrode surface of the capacitor element, and then run side by side in a bus bar parallel running section. The positive electrode bus bar runs in parallel with the negative electrode bus bar in the bus bar parallel running section, and then extends along the positive power terminal from the proximal end of the positive power terminal to the distal end thereof. The negative electrode bus bar runs in parallel with the positive electrode bus bar in the bus bar parallel running section, and then extends along the negative power terminal from the proximal end of the negative power terminal to the distal end thereof.

Power converter

A control device for an internal combustion engine that includes an external EGR device having an EGR passage and an EGR valve installed at an end portion of the EGR passage on the side of a cylinder is configured, when a high intake air pressure condition is met and there is no EGR gas introduction request, to execute an EGR cut control using a variable valve operating device. In the EGR cut control, the control device is configured to open an intake valve during the intake stroke after the EGR valve opens, and adjust an overlap area such that an outflow gas amount via the EGR valve becomes equal to an inflow gas amount via the EGR valve. The EGR passage is configured so as to store a gas that flows out to the EGR passage from the cylinder via the EGR valve during of the EGR cut control.

Control device for internal combustion engine

A control device for an internal combustion engine including a turbocharger and a negative-pressure waste gate valve includes an electronic control unit configured i) to apply a first drive current value to a pressure regulation valve so as to maintain an opening degree of the waste gate valve in a fully closed state in a case where an actual boost pressure is lower than a target boost pressure and a boost pressure difference between the actual boost pressure and the target boost pressure is equal to or larger than a threshold, and ii) to apply a second drive current value that is smaller than the first drive current value to the pressure regulation valve in a case where the actual boost pressure is lower than the target boost pressure and the boost pressure difference is smaller than the threshold.

Control device for internal combustion engine including turbocharger

A control device for an internal combustion engine includes an electronic control unit configured to switch a control algorithms for a calculation of a command value of the actuator between a first control algorithm and a second control algorithm. The electronic control unit is configured to calculate a value obtained by adding a value of a term of the second control algorithm changing in accordance with the deviation calculated in a present control cycle to the command value calculated in a previous control cycle in accordance with the first control algorithm as a value of the command value calculated in the present control cycle in a first control cycle after switching from the first control algorithm to the second control algorithm. The value of the term changing in accordance with the deviation includes an update amount of an I term of the I control calculated in the present control cycle.

A control device of an internal combustion engine calculates on the basis of the air-fuel ratio difference a correction for the estimated fuel supply amount correction for correcting the estimated fuel supply amount to make the estimated and detected air-fuel ratios correspond to each other and calculates correction values for the fuel supply difference compensation and the air amount detection difference compensation by dividing the correction value for the estimated fuel supply amount correction, using the fuel supply and air amount detection difference proportions, and performing the air-fuel ratio control, using the corrected estimated fuel supply and detected air amounts. The correction value for the estimated fuel supply amount correction is divided to the correction values for the fuel supply difference compensation and the air amount detection difference compensation such that a value equivalent to the air-fuel ratio difference becomes equal to the air-fuel ratio difference, using these correction values.

Control device of internal combustion engine

An object of the invention is to provide a feedback control system that calculates a P term and an I term on the basis of a deviation between a target value and a measured value of a control amount, and calculates a correction amount to be applied to an operation amount of a control subject on the basis of a PI term, which is a sum of the P term and the I term, wherein divergence of the I term in a condition where the PI term is restricted by a guard is prevented while improving a convergence property of the I term following removal of the restriction applied to the PI term by the guard. For this purpose, the feedback control system calculates, as a corrected previous value of the I term, a value obtained by subtracting a difference between a value of the PI term prior to restriction by the guard and a value of the PI term following restriction by the guard, from a value of the I term, and then updates the value of the I term by adding an update amount calculated from the deviation between the target value and the measured value of the control amount to the corrected previous value of the I term.

Feedback control system

The invention relates to a control device of an engine, including fuel supplying means, target fuel supply amount setting means, fuel supply command value providing means, supplied air amount detection means, air-fuel ratio detection means, air-fuel ratio calculation means, exhaust gas component concentration detection means and exhaust gas component concentration calculation means. In the invention, the fuel supply command value or the fuel supply amount grasped therefrom is amended and the amount of the air detected by the supplied air amount detection means is amended such that the difference between the air-fuel ratio detected by the air-fuel ratio detection means and the air-fuel ratio calculated by the air-fuel ratio calculation means and the difference between the concentration of the specified component detected by the exhaust gas component concentration detection means and the concentration of the specified component calculated by the exhaust gas component concentration calculation means become small.

Control device of an engine

A control device for an internal combustion engine, which determines a fuel injection quantity deviation state and/or an intake oxygen concentration-related parameter deviation state on the basis of the relationship between the target value (Qtgt) of the fuel injection quantity and an NOx concentration deviation (&#x394;NOx) indicating the difference of the measured value or the estimate value of the NOx concentration of exhaust gas with respect to a predetermined NOx reference concentration, the control device having a state determination means for, on the basis of a first determination index including the amount of change of the NOx concentration deviation (&#x394;NOx) when the target value (Qtgt) of the fuel injection quantity increases within a predetermined range and the NOx concentration deviation (&#x394;NOx) when the target value (Qtgt) of the fuel injection quantity is a predetermined first value (Qtgt2), determining whether the fuel injection quantity deviation is zero, positive, or negative.

A flow rate detection device of the invention comprises a flow rate meterfor outputting an output value Vd depending on a gas flow rate and detects the gas flow rate by calculating the gas flow rate on the basis of the output value output from the flow rate meter. In this invention, it is judged if the output value output from the flow rate meter should be corrected on the basis of the flow rate of the gas passing through the flow rate meter and its change rate. When it is judged that the output value output from the flow rate meter should be corrected, the output value output from the flow rate meter is corrected and then, the gas flow rate is calculated on the basis of this corrected output value.

Growing community of inventors

Isehara, Japan

Shinsuke Aoyagi