Abstract: A water-cooled motor includes: an annular stator having a central axis; and an annular housing surrounding the stator around the central axis and provided with a cooling channel within the housing, the housing includes: an annular non-magnetic metal pipe; and a casting member cast to envelop the metal pipe around the central axis, and the metal pipe is located inward of the cooling channel and located outward of an outer surface of the stator, in a radial direction of the stator.

Abstract: A control device for an internal combustion engine includes an information acquirer, a first computing unit, and a second computing unit. The information acquirer acquires information on a state amount that changes depending on the operation state of the internal combustion engine. A region determiner determines whether the state amount falls within a set region. The first computing unit uses an in-region state amount within the set region, as an input value to compute a control amount of the internal combustion engine by a neural network. The second computing unit selects a reference state amount within the set region, based on the out-of-region state amount, uses the selected reference state amount as an input value to compute a reference control amount by the neural network, and computes the control amount corresponding to the out-of-region state amount based on the computed reference control amount.

Abstract: A control device for an internal combustion engine includes an information acquirer, a first computing unit, and a second computing unit. The information acquirer acquires information on a state amount that changes depending on the operation state of the internal combustion engine. A region determiner determines whether the state amount falls within a set region. The first computing unit uses an in-region state amount within the set region, as an input value to compute a control amount of the internal combustion engine by a neural network. The second computing unit selects a reference state amount within the set region, based on the out-of-region state amount, uses the selected reference state amount as an input value to compute a reference control amount by the neural network, and computes the control amount corresponding to the out-of-region state amount based on the computed reference control amount.

Abstract: A target injector valve opening period is calculated based on a target fuel injection amount, and an injector (2) is controlled by a current supply control unit (51) in accordance with an injector drive period acquired based on the target injector valve opening period. An actual valve closing delay period is calculated based on a drive waveform of the injector (2) at this time, and a difference between an actual valve closing delay period and a valve closing delay period calculated from a target injector valve opening period is learned. Then, the injector drive period is corrected by feedback control using a result of this learning.

Abstract: A microcomputer is configured to: calculate, the drive period of a previous injection, an injection interval, and an uncorrected target drive period for a current injection; obtain a correction period by increasing an internal variable from zero in proportion to the drive period of the previous injection during this drive period, attenuating the internal variable at a first-order delay during the injection interval, dividing the internal variable by a coefficient of the proportion at a start time point of the present current supply, and setting a result of the division as the correction period; and set a period obtained by subtracting the correction period from the uncorrected target drive period as a current drive period, to thereby supply a signal indicating the current drive period to the injector via a driver.

Abstract: Based on an internal EGR ratio and desired external and internal EGR ratios, an EGR valve opening degree is feedback-controlled based on a desired EGR ratio, calculated in such a way as to perform correction so that a total EGR ratio becomes constant, and an EGR effective opening area obtained through learning of the relationship between an EGR valve opening degree and an effective opening area; thus, a correct characteristic of EGR valve opening degree vs. effective opening area can be maintained and hence it is made possible to absorb variations, changes with time, and even environmental conditions, while making an EGR valve and an intake/exhaust VVT collaborate with each other; therefore, an EGR flow rate can accurately be estimated.

Abstract: A microcomputer is configured to: calculate, the drive period of a previous injection, an injection interval, and an uncorrected target drive period for a current injection; obtain a correction period by increasing an internal variable from zero in proportion to the drive period of the previous injection during this drive period, attenuating the internal variable at a first-order delay during the injection interval, dividing the internal variable by a coefficient of the proportion at a start time point of the present current supply, and setting a result of the division as the correction period; and set a period obtained by subtracting the correction period from the uncorrected target drive period as a current drive period, to thereby supply a signal indicating the current drive period to the injector via a driver.

Abstract: According to one aspect, a communication apparatus is provided which is on a LAN and coupled to a server via an external network involving a NAT traversal with a router of the LAN. The communication apparatus is configured to determine a configuration of the router of the LAN; and request the server to transmit a NAT update request packet to the router, which is registered in the server and performs the NAT traversal, when it is determined that the configuration of the router of the LAN is in two or more stages.

Abstract: A target injector valve opening period is calculated based on a target fuel injection amount, and an injector (2) is controlled by a current supply control unit (51) in accordance with an injector drive period acquired based on the target injector valve opening period. An actual valve closing delay period is calculated based on a drive waveform of the injector (2) at this time, and a difference between an actual valve closing delay period and a valve closing delay period calculated from a target injector valve opening period is learned. Then, the injector drive period is corrected by feedback control using a result of this learning.

Abstract: There is provided an internal combustion engine control apparatus having an exhaust gas recirculation amount estimation unit that learns the relationship between an exhaust gas recirculation valve opening area calculated by an exhaust gas recirculation valve opening area calculation unit and an opening degree of the exhaust gas recirculation valve and estimates an recirculation amount of exhaust gas utilized in controlling an internal combustion engine, based on the relationship between the exhaust gas recirculation valve opening area and the opening degree of the exhaust gas recirculation valve.

Abstract: In a control device of an internal combustion engine, an atmospheric pressure estimation portion includes an effective opening area calculation portion calculating an effective opening area corresponding to a throttle opening, a throttle opening learning value calculation portion calculating a learning value in a relation of the effective opening area and the throttle opening, an error variation calculation portion calculating an error variation from an error from the corrected learning value, a variation range determination portion determining whether the error variation is within a predetermined range, an atmospheric pressure estimated value update portion updating an atmospheric pressure estimated value, and a target throttle opening calculation portion calculating a target throttle opening using the updated atmospheric pressure estimated value. The throttle opening is controlled to be the target throttle opening.

Abstract: According to one aspect, a communication apparatus is provided which is on a LAN and coupled to a server via an external network involving a NAT traversal with a router of the LAN. The communication apparatus is configured to determine a configuration of the router of the LAN; and request the server to transmit a NAT update request packet to the router, which is registered in the server and performs the NAT traversal, when it is determined that the configuration of the router of the LAN is in two or more stages.

Abstract: In a turbocharged internal combustion engine, an amount of cylinder suction air is calculated with sufficiently high accuracy to suitably control the internal combustion engine in consideration of influences of an exhaust pressure on a volumetric efficiency equivalent value without requiring a huge memory capacity, in fewer adaptive man hours, and under a low operation load. A correction calculation parameter is calculated using an exhaust pressure, an exhaust pressure for pre-correction volumetric efficiency equivalent value, and an intake manifold pressure, and a post-corrected volumetric efficiency equivalent value is calculated by correcting a pre-correction volumetric efficiency equivalent value using the correction calculation parameter. An amount of air entering a cylinder from an intake manifold is calculated on the basis of the post-correction volumetric efficiency equivalent value.

Abstract: In a control device of an internal combustion engine, an atmospheric pressure estimation portion includes an effective opening area calculation portion calculating an effective opening area corresponding to a throttle opening, a throttle opening learning value calculation portion calculating a learning value in a relation of the effective opening area and the throttle opening, an error variation calculation portion calculating an error variation from an error from the corrected learning value, a variation range determination portion determining whether the error variation is within a predetermined range, an atmospheric pressure estimated value update portion updating an atmospheric pressure estimated value, and a target throttle opening calculation portion calculating a target throttle opening using the updated atmospheric pressure estimated value. The throttle opening is controlled to be the target throttle opening.

Abstract: There is provided an internal combustion engine control apparatus including an exhaust gas recirculation amount estimation unit that can estimate an EGR flow rate with an accuracy enough to appropriately control an internal combustion engine. An internal combustion engine control apparatus according to the present invention has an exhaust gas recirculation amount estimation unit that learns the relationship between a detected opening degree of an exhaust gas recirculation valve and a calculated effective opening area of the exhaust gas recirculation valve and estimates an exhaust gas recirculation amount, based on the relationship between a control exhaust gas recirculation valve effective opening area calculated based on the learning and an opening degree of the exhaust gas recirculation valve; for controlling an internal combustion engine, the internal combustion engine control apparatus utilizes the exhaust gas recirculation amount estimated by the exhaust gas recirculation amount estimation unit.

Abstract: There is provided an internal combustion engine control apparatus that can more accurately calculate a volume efficiency correction coefficient and can more accurately estimate the amount of air that flows into a cylinder and the external exhaust gas recirculation amount. In an internal combustion engine provided with an exhaust gas recirculation apparatus including an exhaust gas recirculation valve and an exhaust gas recirculation path, based on a cylinder flow rate, an exhaust gas recirculation amount, an inner-intake-pipe density, and an inner-intake-pipe density changing amount, a volume efficiency correction coefficient, as a volume efficiency corresponding value, is calculated; then, by use of the calculated volume efficiency correction coefficient, a cylinder intake air amount and a recirculation amount of exhaust gas that is taken into the cylinder are calculated.

Abstract: Based on an internal EGR ratio and desired external and internal EGR ratios, an EGR valve opening degree is feedback-controlled based on a desired EGR ratio, calculated in such a way as to perform correction so that a total EGR ratio becomes constant, and an EGR effective opening area obtained through learning of the relationship between an EGR valve opening degree and an effective opening area; thus, a correct characteristic of EGR valve opening degree vs. effective opening area can be maintained and hence it is made possible to absorb variations, changes with time, and even environmental conditions, while making an EGR valve and an intake/exhaust VVT collaborate with each other; therefore, an EGR flow rate can accurately be estimated.

Abstract: A desired wastegate valve opening degree is set in accordance with a driving condition of an internal combustion engine; based on a detected rotation speed of the internal combustion engine and a set desired wastegate valve opening degree. An ECU determines whether or not supercharging air to the internal combustion engine is required. If the supercharging air is not required and if the opening degree of the wastegate valve becomes a desired valve, a driving current supplied to the wastegate actuator from a wastegate valve driving unit is stopped.

Abstract: An estimation device for a cylinder intake air amount and an internal EGR rate in an internal combustion engine is provided which is capable of making an estimation with a high degree of accuracy in a small number of adaptation constants. The estimation device calculates a volumetric efficiency corresponding value and the internal EGR rate based on an exhaust efficiency (a linear function of intake pipe internal pressure) which is an index indicating an amount of residual gas which is an exhaust gas after combustion remaining in the cylinder without being discharged from the cylinder to an exhaust pipe, and an intake efficiency (a linear function of intake pipe internal pressure) which is an index indicating an amount of air coming into the cylinder from the intake pipe excluding the residual gas.

Abstract: In a control device of an internal combustion engine, an atmospheric pressure estimation portion includes an effective opening area calculation portion calculating an effective opening area corresponding to a throttle opening, a throttle opening learning value calculation portion calculating a learning value in a relation of the effective opening area and the throttle opening, an error variation calculation portion calculating an error variation from an error from the corrected learning value, a variation range determination portion determining whether the error variation is within a predetermined range, an atmospheric pressure estimated value update portion updating an atmospheric pressure estimated value, and a target throttle opening calculation portion calculating a target throttle opening using the updated atmospheric pressure estimated value. The throttle opening is controlled to be the target throttle opening.