A misfire detection device for an internal combustion engine is provided. A mapping takes time series data of instantaneous speed parameters as inputs. Each instantaneous speed parameter corresponds to one of a plurality of successive second intervals in a first interval. The instantaneous speed parameters correspond to the rotational speed of the crankshaft. The first interval is a rotational angular interval of the crankshaft in which compression top dead center occurs. The second interval is smaller than an interval between compression top dead center positions. The mapping outputs a probability that a misfire has occurred in at least one cylinder that reaches compression top dead center in the first interval. The mapping data defining the mapping has been learned by machine learning.

A temperature management apparatus comprising: a temperature management furnace having a space in which an article placed and for which temperature management is carried out; rod members that include magnetic material; opposing members that respectively oppose portions of the lateral sides of the rod members and include magnetic material; drive apparatuses, which rotates the rod members around the central axis axes thereof and changes the relative positions of the rod members and the respective opposing members; and a coupling degradation monitoring unit 301 for predicting or detecting degradation in the respective coupling between the rod members and the respective opposing members.

A temperature management apparatus comprising: a temperature management furnace having a space in which an article placed and for which temperature management is carried out; rod members that include magnetic material; opposing members that respectively oppose portions of the lateral sides of the rod members and include magnetic material; drive apparatuses, which rotates the rod members around the central axis axes thereof and changes the relative positions of the rod members and the respective opposing members; and a coupling degradation monitoring unit 301 for predicting or detecting degradation in the respective coupling between the rod members and the respective opposing members.

The present invention provides a sensor apparatus including a rotor, a stator disposed outside the rotor, a sensing part configured to measure a magnetic field generated between the rotor and the stator, a housing which accommodates the rotor and the stator, a sensor module disposed in the housing, and a protrusion which protrudes from an outer circumferential surface of the housing and includes a spherical surface in point contact with an external fixing part.

The invention relates to a torque sensor having a base body which extends in a radial direction of the base body from an annular inner flange having first force application points, via a mechanically weakened sensor portion equipped with measurement transducers which generate output signals, to an annular outer flange having second force application points, wherein the second force application points are connected to the sensor portion by a radially elastic material portion.

A cooling device of an internal combustion engine includes a control valve that regulates the flow of a cooling liquid in a circulation circuit, and an electronic control unit. The electronic control unit is configured to have the following functions: controlling driving of a motor of the control valve; determining whether or not the shifting speed of a valve body of the control valve has decreased rapidly; calculating a motor torque based on an effective voltage applied to the motor; deriving a collision factor based on a smoothed angular speed value; and when the electronic control unit determines that the shifting speed of the valve body has decreased rapidly, calculating a rapid-decrease-caused stress so as to become larger as a product of the motor torque and the collision factor becomes larger.

A cooling device of an internal combustion engine includes a control valve that regulates the flow of a cooling liquid in a circulation circuit, and an electronic control unit. The electronic control unit is configured to have the following functions: controlling driving of a motor of the control valve; determining whether or not the shifting speed of a valve body of the control valve has decreased rapidly; calculating a motor torque based on an effective voltage applied to the motor; deriving a collision factor based on a smoothed angular speed value; and when the electronic control unit determines that the shifting speed of the valve body has decreased rapidly, calculating a rapid-decrease-caused stress so as to become larger as a product of the motor torque and the collision factor becomes larger.

A server rack includes supports connected to a bottom base, and at least one shelf connected between at least two of the supports. Adjustable feet engaging the bottom base are disposed proximate a corresponding generally corner region of the bottom base. Jack bodies protruding upwardly from the bottom base are disposed proximate the corresponding generally corner region of the bottom base.

A server rack includes supports connected to a bottom base, and at least one shelf connected between at least two of the supports. Adjustable feet engaging the bottom base are disposed proximate a corresponding generally corner region of the bottom base. Jack bodies protruding upwardly from the bottom base are disposed proximate the corresponding generally corner region of the bottom base.

A method for use in dynamometer testing of a vehicle having a steering mechanism for changing steering angle of at a wheel hub connected to a first wheel shaft, the method includes: in use, applying a torque to said first wheel shaft using a first controllable dynamometer power source of a vehicle dynamometer test unit rigidly connected to said wheel hub, wherein a change of steering angle of said wheel hub rotates said rigidly connected first dynamometer test unit, characterized in the method including, when changing steering angle of said wheel hub: applying an external force acting on the dynamometer test unit to influence force required by the vehicle steering mechanism to change steering angle of said wheel hub.