Automotive/​Transportation

Order by: [ Title ] [ Date ] [ Views ]

We are glad to representing our own Electronic scooter witch perform amazing results in cross-country ability, safety, range and speed.

All components of our own design and we proud of 3 general features(patent pending) in our scooter: motor wheel with liquid cooling system, hydraulic brake system, Suspension.

1. General information
-Maximum speed - 110km\h
-Acceleration 0-100km\h - 6 seconds
-Weight - 66кг
-Maximum load - 200kg
-Range of mileage on one charge, at a constant speed of 100km\h - 60km
-Range of mileage on one charge, at a constant speed of 60 km\h - 110 km
-Range of mileage on one charge, at a constant speed of 30km\h - 160km
-Minimum battery charging time 0-100% - 2 hours

2. ...

Every day, almost 30 people in the United States die in drunk-driving crashes—that's one person every 48 minutes in 2017. These deaths have fallen by a third in the last three decades; however, drunk-driving crashes claim more than 10,000 lives per year. It is surprising to see this problem being very serious worldwide in this time where the technology reached at its peak more than ever and still no reliable solution has been developed. This will lead us to ask “what makes spotting of drivers who are under influence of alcohol hard?” Usually drunk drivers are caught when they have been in an accident big or small. At this time it is no point because the accident already happened and the damage is already done. So we need to ...

Frame steered construction vehicles, Articulated Dump Trucks (ADT), Wheeled Loaders, are known to be unstable at elevated speeds presenting safety/productivity concerns. Literature on this issue deals only with measures such as control systems to reduce instability.

The cause of instability, rear wheel steer, is not addressed. Instability can be controlled by the driver at lower speeds but control is beyond the reaction speeds of most drivers at elevated speeds, as shown in high speed maneuvering of fork lifts or high speed reversing of automobiles.

In a frame steer vehicle when the wheel is turned right the front chassis turns to the right but the rear chassis initially turns to the left. This is a cause of instability. At elevated ...

This bearing design is meant to reduce, as much as possible, sliding contact between load bearing rolling elements inside an axial bearing. It's designed to do this by employing spherical rolling elements which are stacked in three intermeshed, interspersed layers of balls such that no two consecutive or neighbouring spheres in the same layer or row ever come into direct contact with each other but instead only have indirect contact, mediated by a 3rd rolling element in one or two of the other layers of spherical rolling elements, depending on which of the three layers we are considering.

Thus the bearing has an inner and an outer layer of spherical rolling elements, wherein balls are arranged in pairs, and ...

This tapered roller bearing design employs 3 stacked layers of tapered rollers such that any two consecutive tapered rollers with the same one layer of rollers are kept separated, a small distance apart, so that they cannot come into contact and rub against each other, causing friction and load.

The rollers are significantly slanted downwards (or, depending on your point of view, upwards) towards the centre of the bearing so that their round, rolling surfaces pick up a significant component of both radial and axial forces which the bearing may experience during use.

The bearing's rollers are tapered rather than uniform cylinders and are arranged in a radial pattern such that their respective axes of rotation all point to ...

Currently all commercial continuously variable transmissions (CVT’s) in the automotive industry function on a friction drive principle. This friction drive interface exists between two hardened smooth steel surfaces separated by a traction fluid film. Traction fluid has the unique property in that it solidifies under high pressure, typically between 1 to 4 GPa, and then provides a traction coefficient of friction that varies from about 0.05 to 0.1. A number of factors determine the friction coefficient as well as the efficiency of the friction drive and as a result current commercial CVT’s do not feature high mechanical efficiencies, with a typical average mechanical efficiency of about 85%. Traction drive technology is a very well matured technology and has been ...

The AxOPOC Engine is a hybridization of the EcoMotors’ EM-Series Opposing Piston Opposing Cylinder engine, and a sinusoidal-cam wobble-plate engine (aka. Revolver-cam/Dynacam engine). In this case, the inner two pistons share a common wobble-plate which is π-radians (180) out of phase with the end capping wobble-plates (and thicker than its counter-parts to deal with the greater forces acting upon it), which each accommodate a single piston, and needing guide-rods to maintain proper contact with the cam-plate. As with all sinusoidal-cam wobble-plates, the pistons are connected by a twin-roller assembly that rides on the rim of the cam, transferring the mechanical energy. This greatly reduces the mechanical complexity of linkages, and friction (by approximately 40%) due to eliminating side-forces on ...

Patented method of safely straightening bent automobile wheels. The SEMA award winning process employs simultaneous dual-axis hydraulic pressure to gently relieve the molecular strain in the metal at the bend site. The process spreads the yielding forces over a wider area allowing for the minimal application of heat. Too much heat will alter the physical and chemical properties of the metal and can damage the heat treat level. Scientific testing, reported in SAE Technical Paper 2016-01-1573, revealed that driving on a bent wheel will eventually result in a crack, which causes low air pressure, a dangerous driving hazard. NHTSA reports over 11,000 catastrophic blowouts annually are caused by low tire pressure. If properly done, wheel straightening is safe and ...

Automotive suspension systems utilizing shock-absorber components are indispensable parts of electrical automobiles relying on rechargeable battery power. Suspension systems are a good source of kinetic energy. In particular, commonly used hydraulic shock-absorbing components contain mechanically closed-loop and fluctuating pressure environment with high frequency force variations subject to vehicle weight, vehicle velocity, tire and road conditions.

Kinetic energy generated by electrical vehicle hydraulic shock absorbers can be harvested with high-efficiency and converted to DC voltage output within the shock-absorbers and used to recharge vehicle batteries or for other casual vehicle consumption. This proposal involves a method which does not use moving-parts and is easily adaptable to the existing shock-absorber manufacturing processes. Depicting the general concept in illustration provided(courtesy of Internet), ...

The purpose of the work: to increase and improve the quality of parts and assembly of gearboxes of vehicles, reduce the labor intensity and cost of manufacturing the gearbox, increase productivity in the assembly operation.

Project objective. To elaborate: the base table for mounting of all equipment, drive rotation, the bearing support for clamping the chuck, spindle assembly for securing the test site, stand for securing the device to control torque, the system of fixing the device to control the friction torque from the test duplexity bearing assemblies, the system of control number of revolution of the spindle.

Preload is one of the most important parameters that determine the reliability and durability of any structure. Preload is created during ...

Page 1 of 3