Abstract: (Solution) A determination apparatus configured to determine deterioration of a fluid to be used in circulation includes: a power index acquisition section configured to acquire information indicating a value of a power index, which is an index that represents a state of a pump for circulating the fluid and that is correlated with magnitude of power consumption of the pump; and a determination section configured to, based on the value of the power index acquired by the power index acquisition section, determine (i) whether the fluid has deteriorated, (ii) a degree of the deterioration of the fluid, and/or (iii) necessity of replacement of the fluid. The power index acquisition section may acquire the information indicating the value of the power index in each of one or more periods.

Abstract: A diagnosis apparatus that is mounted on equipment and diagnoses a state of the equipment includes a timing decision section configured to decide timing at which the diagnosis apparatus diagnoses the state of the equipment. The timing decision section is configured to decide the timing such that a length of a time interval for a diagnosis during a first time period is equal to or less than a first reference value, and a length of a time interval for a diagnosis during a second time period is greater than the first reference value. The first time period and the second time period do not temporally overlap.

Abstract: A part management apparatus may include an acquisition unit configured to acquire part information indicating a part having a symptom of a failure among a plurality of parts configuring a drive mechanism mounted to a vehicle. The part management apparatus may include an identification unit configured to refer to a storage unit that is configured to store a material configuring each of the plurality of parts to identify a material of the part indicated by the part information. The part management apparatus may include a notification unit configured to notify a material management apparatus configured to manage an inventory of a material of a part, of information related to the material of the part.

Abstract: A vehicle management apparatus may include a collection unit configured to collect data indicating a state of a vehicle based on a detection result of a sensor configured to detect the state of the vehicle from a plurality of vehicles. The vehicle management apparatus may include a classification unit configured to classify the plurality of vehicles into a plurality of group according to a predetermined algorithm based on the data of each of the plurality of vehicles. The vehicle management apparatus may include an identification unit configured to identify, when a faulty vehicle in which a failure has occurred is present among the plurality of vehicles, another vehicle belonging to a group to which the faulty vehicle belongs from among a plurality of groups as a failure symptom vehicle having a symptom of occurrence of a failure.

Abstract: A failure symptom sensing system may comprise an acquisition unit configured to acquire, while a driving function of a vehicle is in operation, a plurality of data from a plurality of sensors configured to sense a state of the vehicle. The failure symptom sensing system may comprise a generation unit configured to generate, from the plurality of data, feature quantity data indicating a feature quantity of each of the plurality of data in accordance with a predetermined algorithm. The failure symptom sensing system may comprise a sensing unit configured to sense, when the sensing unit senses an instruction to stop the driving function of the vehicle, whether an indication of failure of the vehicle exists based on the feature quantity data and a predetermined reference feature quantity data.

Abstract: The present invention provides a CVT including a transmission mechanism and a planetary gear mechanism which includes a plurality of rotation elements. The transmission mechanism can differentially operate in a predetermined operation mode. The CVT includes a vehicle speed specifying unit for specifying a vehicle speed based on a rotation speed of a rotation member. The unit specifies the vehicle speed from the rotation speed when the rotation speed exceeds a threshold, and specifies the vehicle speed based on a target driving force, a running resistance and a weight of the vehicle when the rotation speed is not more than the threshold.

Abstract: The present invention provides a CVT including a transmission mechanism and a planetary gear mechanism which includes a plurality of rotation elements. The transmission mechanism can differentially operate in a predetermined operation mode. The CVT includes a vehicle speed specifying unit for specifying a vehicle speed based on a rotation speed of a rotation member. The unit specifies the vehicle speed from the rotation speed when the rotation speed exceeds a threshold, and specifies the vehicle speed based on a target driving force, a running resistance and a weight of the vehicle when the rotation speed is not more than the threshold.

Abstract: A simulator comprising computer-aided design programs for simulating a shift control algorithm stored in an ECU of an automatic transmission having hydraulic clutches. In the simulator, a simplified hydraulic model describes the entire system so as to design a third model based on which simulation is conducted. With this, by using such a simplified model, it becomes possible to decrease simulation time to 4 sec., enabling to simulation in a time close to an actual shift of approximately 1.5 sec. Moreover, the durability of transmission is tested by repeating the simulation. When the occurrence of undesirable shift phenomenon is forecast in the simulation, the shift control algorithm is corrected until the phenomenon disappears in the next simulation. With this, the manufacturing of a test transmission and a preliminary test are no longer needed, thereby further improving the efficiency and costs of transmission development.

Abstract: A simulator comprising computer-aided design programs for simulating a shift control algorithm stored in an ECU of an automatic transmission having hydraulic clutches. In the simulator, a simplified hydraulic describing the behavior of the clutch is designed and is incorporated with a model describing the entire system so as to design a third model based on which simulation is conducted. With this, by using such a simplified model, it becomes possible to decrease simulation time to 4 sec., enabling to simulation in a time close to an actual shift of approximately 1.5 sec. Moreover, the durability of transmission is tested by repeating the simulation. When the occurrence of undesirable shift phenomenon is forecast in the simulation, the shift control algorithm is corrected until the phenomenon disappears in the next simulation. With this, the manufacturing of a test transmission and a preliminary test are no longer needed, thereby further improving the efficiency and costs of transmission development.