Abstract: An object is to carry out an abnormality diagnosis for a variable compression ratio mechanism without adding any special hardware configuration for estimating a compression ratio. An abnormality diagnostic device for a variable compression ratio mechanism adapted to be applied to an internal combustion engine comprises a controller configured to calculate a predetermined rotational speed difference which is a rotational speed difference, between an engine rotational speed at a predetermined crank angle before or after compression top dead center and an engine rotational speed in the vicinity of the compression top dead center for a predetermined cylinder at the time of carrying out fuel cut processing, set a reference range of the predetermined rotational speed difference, and make a diagnosis that abnormality has occurred in the variable compression ratio mechanism when the predetermined rotational speed difference is out of the reference range.

Abstract: An electronic control unit of a control device for an internal combustion engine executes, for a first cycle, first drive processing for controlling an actuator such that a pin drive operation is executed for switching from a first cam to a second cam, executes second drive processing for controlling the actuator such that the pin drive operation is executed again for a second cycle, and executes abnormality determination processing for determining that a cam switching mechanism has an abnormality in a case where a pin returns to a reference position by using a pin return section following a cam switching section of the first cycle after the execution of the first drive processing and the pin returns to the reference position by using the pin return section following the cam switching section of the second cycle after the execution of-the second drive processing.

Abstract: Provided is a control device for an internal combustion engine equipped with a cam switching device including a cam groove provided on the outer peripheral surface of a camshaft and an electromagnetic solenoid type actuator capable of protruding, toward the camshaft, an engagement pin that is engageable with the cam groove. The control device is configured, in causing the cam switching device to perform a cam switching operation, to perform energization of the actuator such that the engagement pin is seated on a forward outer peripheral surface, and to more lower, when an electric current (coil current) flowing through the actuator as a result of the energization is greater, an average electric voltage per unit time applied to the actuator in protruding the engagement pin toward the cam groove from the forward outer peripheral surface.

Abstract: A control device is configured, if, although the control device has caused a cam switching device to perform a first cam switching operation for switching the profiles of all the valve-driving cams of a plurality of cylinders from a first profile to a second profile, the profiles of all the valve-driving cams of the plurality of cylinders do not coincide with the second profile, to cause the cam switching device to perform a second cam switching operation for switching the profile of the valve-driving cam for at least one or more normal cylinders that are one or more cylinders at which the switching of profiles to the second profile has succeeded.

Abstract: At crank angle CA10 at which the switch request of the drive cam was issued, the ejection operations of the pins at all the solenoid actuators started simultaneously. The ejected pins are seated on the cam carriers at erank angle CA12. The pin seated on the cam carrier moves along the grooves in accordance with the rotation of the cam carrier. The earliest finish timing of the switch operation of the drive cam is at crank angle CA13 (#4 cylinder). At the crank angle CA13, drive of the fuel injector and the ignition device in each cylinder is permitted.

Abstract: An internal combustion engine system is provided with a cam switching device including a cam groove provided on the outer peripheral surface or a camshaft and an actuator capable of protruding, toward the camshaft, an engagement pin that is engageable with the cam groove. The internal combustion engine system is configured, in causing the cam switching device to perform a cam switching operation, to control the actuator such that the engagement pin is seated on a forward outer peripheral surface which is located more forward than an end of the cam groove on the forward side with respect to an insert section of the cam groove in the rotational direction of the camshaft.

Abstract: In a system that selects a large-cam as a driving cam at a time of a start of an engine, when an engine stop request is output, it is determined whether there is a small-cam cylinder for which a small-cam is selected as the driving cam. In a case where it is determined that there is a small-cam cylinder, a switching command for switching the driving cam from the small-cam to the large-cam is output. When an engine start request is output, the above determination is performed again. In a case where it is determined that there is a small-cam cylinder, the switching command is output to all solenoid actuators again. In addition, the drive of the fuel injector is suspended until the switching operation of the driving cam is completed for all cylinders.

Abstract: In starting the engine, if it is determined that large cams are not completely prepared for all driving cams, valve closing timings of all intake valves are changed by driving the VVT so that all of the cylinders have equal in-cylinder filling efficiency. A fuel injection amount of each cylinder is determined by a feedforward control assuming that the large cams are completely prepared for all of the driving cams. When the valve closing timing of all of the intake valves are changed by driving the VVT to equalize the in-cylinder filling efficiencies of all of the cylinders, all of the cylinders have substantially equal in-cylinder air-fuel ratios.

Abstract: When a stop request to the engine is issued, it is determined whether or not all of the drive cams are large cams. When it is determined that at least one of the small cams is included in the drive cams, the engine is continued to drive for a while and a switch control for switching the drive cams from the small cams to the large cams is executed within the duration. A self-holding type solenoid is used to switch between the small cams and the large cams. In the switch control, a permission to stop the engine is output at a timing when the “pin protrudable section” of the final cylinder #2 has elapsed.

Abstract: In starting the engine, if it is determined that large cams are not completely prepared for all driving cams, valve closing timings of all intake valves are changed by driving the VVT so that all of the cylinders have equal in-cylinder filling efficiency. A fuel injection amount of each cylinder is determined by a feedforward control assuming that the large cams are completely prepared for all of the driving cams. When the valve closing timing of all of the intake valves are changed by driving the VVT to equalize the in-cylinder filling efficiencies of all of the cylinders, all of the cylinders have substantially equal in-cylinder air-fuel ratios.

Abstract: An object is to carry out an abnormality diagnosis for a variable compression ratio mechanism without adding any special hardware configuration for estimating a compression ratio. An abnormality diagnostic device for a variable compression ratio mechanism adapted to be applied to an internal combustion engine comprises a controller configured to calculate a predetermined rotational speed difference which is a rotational speed difference, between an engine rotational speed at a predetermined crank angle before or after compression top dead center and an engine rotational speed in the vicinity of the compression top dead center for a predetermined cylinder at the time of carrying out fuel cut processing, set a reference range of the predetermined rotational speed difference, and make a diagnosis that abnormality has occurred in the variable compression ratio mechanism when the predetermined rotational speed difference is out of the reference range.

Abstract: Disclosed is a method of generating image-processing component data which is used when an image of a component to be mounted by a component mounting apparatus is recognized. The method includes extracting first component shape data from CAD data of the component, measuring second component shape data from an image of the component obtained by an imaging device, and generating image-processing component data based on the first and second component shape data.

Abstract: In a component mounting apparatus, when one of first and second board transfer devices is performing the unloading and loading of boards, a controller operates a component placing device to mount components on a first or second board loaded by the other board transfer device. Thus, it is possible to effectively utilize the time which is taken for the unloading and the loading of either boards, for component mountings on the other board, so that the efficiency in producing boards can be enhanced. Further, since the controller executes a control so that while component mountings are performed on the first boards of M-sheets on the first board transfer device, component mountings are performed on the second boards of N-sheets on the second board transfer device, it is realized to suppress the occurrence of an intermediate stock of either boards where the first boards of the M-sheets and the second boards of the N-sheets are required.

Abstract: An operating apparatus including a main body, a movable member, a drive unit having a drive source, and a control unit controlling the drive source to control the position of the movable member relative to the main body. The control unit including a position control system and an acceleration control system. The position control system including a position command portion, a first feedforward compensator outputting a first operation command to the drive source, a second feedforward compensator, a positional-information acquiring device obtaining information related to the position of the movable member, and a first feedback compensator outputting a second operation command to the drive source. The acceleration control system including an acceleration-information acquiring device obtaining information related to an acceleration of the main body, a third feedforward compensator, a second feedback compensator outputting a third operation command to the drive source.

Abstract: In a component mounting apparatus, when one of first and second board transfer devices is performing the unloading and loading of boards, a controller operates a component placing device to mount components on a first or second board loaded by the other board transfer device. Thus, it is possible to effectively utilize the time which is taken for the unloading and the loading of either boards, for component mountings on the other board, so that the efficiency in producing boards can be enhanced. Further, since the controller executes a control so that while component mountings are performed on the first boards of M-sheets on the first board transfer device, component mountings are performed on the second boards of N-sheets on the second board transfer device, it is realized to suppress the occurrence of an intermediate stock of either boards where the first boards of the M-sheets and the second boards of the N-sheets are required.

Abstract: Disclosed is a method of generating image-processing component data which is used when an image of a component to be mounted by a component mounting apparatus is recognized. The method includes extracting first component shape data from CAD data of the component, measuring second component shape data from an image of the component obtained by an imaging device, and generating image-processing component data based on the first and second component shape data.

Abstract: A driving apparatus for an air conditioning system has a first and a second electrical actuators for driving air control doors, wherein the first and second actuators are accommodated in a common housing so that they are modularized to each other. The driving apparatus further has a third electrical actuator for driving another air control door, wherein the third actuator is provided at a position separated from the housing. Driving circuits for the first to third actuators are formed on a single IC chip or on a single electrical circuit board. The driving circuits formed on the IC chip or the electrical circuit board is accommodated in the housing for the first and second actuators.

Abstract: An operating apparatus including a main body, a movable member, a drive unit having a drive source, and a control unit controlling the drive source to control the position of the movable member relative to the main body. The control unit including a position control system and an acceleration control system. The position control system including a position command portion, a first feedforward compensator outputting a first operation command to the drive source, a second feedforward compensator, a positional-information acquiring device obtaining information related to the position of the movable member, and a first feedback compensator outputting a second operation command to the drive source. The acceleration control system including an acceleration-information acquiring device obtaining information related to an acceleration of the main body, a third feedforward compensator, a second feedback compensator outputting a third operation command to the drive source.

Abstract: An operating device in a vehicle has hierarchical display screens. The hierarchical display screens have operation items for operating an operational object. An operation item on a lower-level screen is displayed on the top screen, based on the number of use of the operation item.

Abstract: A manipulation display area and an operation state display area are disposed in a display. The manipulation display area is divided into a constant area and a variable area. The constant area includes manipulation items to be most frequently selected by a user, while the variable area includes manipulation items to be altered according to use condition. Thereby the user can easily reach a necessary manipulation item among a lot of the manipulation items.