In-wheel motors for new energy vehicles are close to the brake, which results in a high ambient temperature. Thus, there is demand cooling systems. This paper designs an oil-spray-cooled system based on flat structural characteristics of in-wheel motor. A computational fluid dynamics method with two-phase volume-of-fluid model applied simulate transient process oil spraying from nozzles onto st...

Aiming to more accurately control the wheel speed of an electric vehicle (EV) driven by four in-wheel motors, a developed whale optimization algorithm-proportional–integral–derivative (KW-WOA-PID) algorithm is proposed herein. In this study, mathematical and simulation models are built for EVs analyzing mechanical structures motors. Simulations conducted, driving requirements motors obtained. T...

Abstract During the verification process of special axle (wheel) load scales for motor vehicles test using standard dynamometer method, it is necessary to first apply pressure vertically receptor through axis force sensor, which a prerequisite subsequent parameter work such as indication error. Aiming at problem low automation in lifting and lowering sensors jacks, this paper introduces device ...

The advantages/disadvantages of energy storage devices, which can provide nonpolluting automobile systems are discussed. Four types of storage devices are identified: electro-chemical (batteries) hydrogen electro-mechanical (flywheels) Molten salt heat storage A high speed flywheel with a small permanent magnet motor/generator has more advantages than any of the other systems and might become a...

Prolonged wakefulness is thought to gradually increase 'sleep need' and influence subsequent sleep duration and intensity, but the role of specific waking behaviours remains unclear. Here we report the effect of voluntary wheel running during wakefulness on neuronal activity in the motor and somatosensory cortex in mice. We find that stereotypic wheel running is associated with a substantial re...

Rough terrain control optimization for space rovers has become a popular and challenging research field. Improvements can be achieved concerning power consumption, reducing the risk of wheels digging in and increasing ability of overcoming obstacles. In this paper, we propose a terrain profiling and wheel speed adjustment approach based on terrain shape estimation. This terrain estimation is pe...

This research is to investigate the dynamic characteristics of the grinding process. A kind of robust grinding wheel reciprocating arrangement is schemed out, which realizes the precise point-grinding machining. The grinding wheel reciprocating movement is driven by a linear motor to replace the traditional crank or hydraulic pressure drive device. Based on the time series method, the modal exp...

[structure: see text] With the eventual goal of demonstrating a motorized nanocar, the key structure has been synthesized which bears a light-activated unidirectional molecular motor and an oligo(phenylene ethynylene) chassis and axle system with four carboranes to serve as the wheels. Kinetics studies in solution show that the motor indeed rotates upon irradiation with 365 nm light, and the fu...

The motor vehicles which dispose of two steering auto decks, at which back and front wheels are positioned backwards for reducing the veering radius, has the advantage of reducing the stability at high speeds in auto racing. In this paper is made an analysis of the steering boxes on back axle variant, which combine the advantage of reducing veering radius with keeping its whole stability.