800 hp / 600 kw Electric Evo 3 !!!
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evo-gsr
Well-Known Member
The Australian company Evans Electric has developed an electric car that is literally direct drive. It is a 4-door sedan, a Mitsubishi Lancer Evolution, that produces 800 HP/600 kW (peak) and 1,250 Newton-metres (925 foot-pounds) of torque.“While the torque figure could at first glance appear fantastic, standard automotive industry practice only quotes torque at the flywheel not at the wheels,” Evans Electric notes. “As an example the Tesla Model S Performance has a quoted peak motor torque of 600 Nm. With a single speed reduction gear ratio of 9.73:1 that equates to a total of 5,838 Nm (minus gearing losses) at the wheels. The Evans Electric motors are direct drive, so the rotor turns at the same speed as the wheel. Instead of mechanical reduction gearing, they are electrically geared using an 8 pole stator winding configuration.”To help you understand the significance of that: direct drive equipment has the benefit of mechanical simplicity, and sometimes efficiency, as the alternatives, which are gear-driven systems, waste energy.Mechanical equipment cannot get any simpler than direct drive. This is because the motor directly turns the wheels itself. In the case of this Lancer Evo 3 vehicle, it has an electric motor integrated into each of the four 19″ (48 cm) wheels. No gears, no transmission, nothing at all.
evo-gsr
Well-Known Member
Apart from the points above, according to the Evans Electric press release, there are other benefits of the electric drive system. It says that the improved mechanical power transmission efficiency enables more energy to be recaptured via regenerative braking, up to 85% of it in this case.This vehicle can achieve electromagnetic braking. No friction. Friction brakes are inherently inefficient because they dissipate the kinetic energy that moves the vehicle as heat and wastes it until the vehicle slows to a stop.“The Evans Electric in-wheel motors enable non-contact electromagnetic braking, replacing hydraulic friction brake systems which are 99% redundant in current generation electric/hybrid vehicles. Using only the wheel motors, the car can brake at greater than 1G.”The Evans Electric in-wheel EV motor, powering a Lancer Evo 3, was just unveiled at Meguiar’s MotorEx at Sydney Olympic Park. Here are some more notes from Evans Electric about its technology:Evans Electric hold a patent for a vehicle drive system using wheel motors for propulsion and braking, the most impressive feature of which is that safety and vehicle dynamics features such as ABS, stability control, traction control, brake steer, active brake bias, torque vectoring, intelligent cruise control, emergency brake assist and collision avoidance all become customisable and upgradable software functions.When these systems are combined with wheel motors they allow a new level of performance based active yaw control that unlike most current stability control systems (which only activate in an emergency situation) are active at all times, dynamically fine tuning understeer and oversteer to enhance cornering speed and safety.After an extensive period of wheel motor validation testing and power electronics development the company has met with several automotive Tier 1 suppliers to discuss collaboration &/or licensing to move the project from proof of concept to commercial product development. Final preparations are under way with track testing expected to commence by the time the Bathurst 1000 rolls around in October.
evo-gsr
Well-Known Member
God only knows why It has a GSR bonnet on it if its an Evo 3 but? I think its a GSR. It has clear indicators and no rear quarter aerial either. Cant see a rear wiper either???
Either way I wouldnt mind taking it for a few laps.
Either way I wouldnt mind taking it for a few laps.
4piknup
master of none
Gsr bonnet for the smooth look. I like it.
I read a article by julian edgar (used to do tech pieces for zoom about the time they were building the cyborg)
He was doing the tech on getting more regen in a prius. It ended up being 15% more economical...showing we will be able to hotrod our electric cars.
These wheel motors I think are similar to a frontloader motor in they are direct drive.
I read a article by julian edgar (used to do tech pieces for zoom about the time they were building the cyborg)
He was doing the tech on getting more regen in a prius. It ended up being 15% more economical...showing we will be able to hotrod our electric cars.
These wheel motors I think are similar to a frontloader motor in they are direct drive.
Evans Electric Unveils AWD In-Wheel Motor powered electric car
SYDNEY – Australia based start-up company Evans Electric have unveiled an All Wheel Drive In-
Wheel Motor powered Lancer Evo 3 during Meguiar's MotorEx at Sydney Olympic Park
The 4 door sedan with World Rally Championship pedigree features a direct drive, disc type electric motor in each of it's 19" wheels. Each Axial Flux 3 phase AC Induction wheel motor has a nominal output of 75 kw and 625 Nm of torque with a peak output of 150 kw and 1,250 Nm giving the vehicle a total peak output of 600 kw (800 hp) and 5,000 Nm.*
Direct drive wheel motors eliminate mechanical transmission losses allowing up to 85% of a
vehicle's kinetic energy to be recoverable during braking. Maximising brake regeneration lowers a vehicles over-all energy consumption potentially leading to more range per kWh of battery capacity or the use of a smaller battery pack for similar range. As the battery is the single most expensive component in an EV this could lead to lower cost electric cars.
The Evans Electric in-wheel motors enable non-contact electromagnetic braking, replacing
hydraulic friction brake systems which are 99% redundant in current generation electric/hybrid
vehicles. Using only the wheel motors, the car can brake at greater than 1G.
Evans Electric hold a patent for a vehicle drive system using wheel motors for propulsion and
braking, the most impressive feature of which is that safety and vehicle dynamics features such as ABS, stability control, traction control, brake steer, active brake bias, torque vectoring, intelligent cruise control, emergency brake assist and collision avoidance all become customisable and upgradable software functions.
When these systems are combined with wheel motors they allow a new level of performance based
active yaw control that unlike most current stability control systems (which only activate in an emergency situation) are active at all times, dynamically fine tuning understeer and oversteer to enhance cornering speed and safety.
After an extensive period of wheel motor validation testing and power electronics development the company has met with several automotive Tier 1 suppliers to discuss collaboration &/or licensing to move the project from proof of concept to commercial product development. Final preparations are under way with track testing expected to commence by the time the Bathurst 1000 rolls around in October.
*While the torque figure could at first glance appear fantastic, standard automotive industry practice only quotes torque at the flywheel not at the wheels. As an example the Tesla Model S Performance has a quoted peak motor torque of 600 Nm. With a single speed reduction gear ratio of 9.73:1 that equates to a total of 5,838 Nm (minus gearing losses) at the wheels. The Evans Electric motors are direct drive, so the rotor turns at the same speed as the wheel. Instead of mechanical reduction gearing, they are electrically geared using an 8 pole stator winding configuration.
SYDNEY – Australia based start-up company Evans Electric have unveiled an All Wheel Drive In-
Wheel Motor powered Lancer Evo 3 during Meguiar's MotorEx at Sydney Olympic Park
The 4 door sedan with World Rally Championship pedigree features a direct drive, disc type electric motor in each of it's 19" wheels. Each Axial Flux 3 phase AC Induction wheel motor has a nominal output of 75 kw and 625 Nm of torque with a peak output of 150 kw and 1,250 Nm giving the vehicle a total peak output of 600 kw (800 hp) and 5,000 Nm.*
Direct drive wheel motors eliminate mechanical transmission losses allowing up to 85% of a
vehicle's kinetic energy to be recoverable during braking. Maximising brake regeneration lowers a vehicles over-all energy consumption potentially leading to more range per kWh of battery capacity or the use of a smaller battery pack for similar range. As the battery is the single most expensive component in an EV this could lead to lower cost electric cars.
The Evans Electric in-wheel motors enable non-contact electromagnetic braking, replacing
hydraulic friction brake systems which are 99% redundant in current generation electric/hybrid
vehicles. Using only the wheel motors, the car can brake at greater than 1G.
Evans Electric hold a patent for a vehicle drive system using wheel motors for propulsion and
braking, the most impressive feature of which is that safety and vehicle dynamics features such as ABS, stability control, traction control, brake steer, active brake bias, torque vectoring, intelligent cruise control, emergency brake assist and collision avoidance all become customisable and upgradable software functions.
When these systems are combined with wheel motors they allow a new level of performance based
active yaw control that unlike most current stability control systems (which only activate in an emergency situation) are active at all times, dynamically fine tuning understeer and oversteer to enhance cornering speed and safety.
After an extensive period of wheel motor validation testing and power electronics development the company has met with several automotive Tier 1 suppliers to discuss collaboration &/or licensing to move the project from proof of concept to commercial product development. Final preparations are under way with track testing expected to commence by the time the Bathurst 1000 rolls around in October.
*While the torque figure could at first glance appear fantastic, standard automotive industry practice only quotes torque at the flywheel not at the wheels. As an example the Tesla Model S Performance has a quoted peak motor torque of 600 Nm. With a single speed reduction gear ratio of 9.73:1 that equates to a total of 5,838 Nm (minus gearing losses) at the wheels. The Evans Electric motors are direct drive, so the rotor turns at the same speed as the wheel. Instead of mechanical reduction gearing, they are electrically geared using an 8 pole stator winding configuration.
4piknup
master of none
450kg without batteries. 2450kg with batteries.
Also need a person to walk in front ringing a bell to warn pedestrians that a quiet vehicle is approaching.
Also need a person to walk in front ringing a bell to warn pedestrians that a quiet vehicle is approaching.
evo-gsr
Well-Known Member
Where did you get those weights from? Sounds a bit much.
evo-gsr
Well-Known Member
Just put the window down and make the pshhhh noise each time you back off. No need for bottled co2!
khubner1
Moderator
Cary a feather and make yourself sneaze
4piknup
master of none
evo-gsr
Well-Known Member
I reckon your way off. Theres no way that floorpan would hold 2 tonnes of battery.
Most of the floor pan would have been strengthened to support all the brackets and gadgets to support the electric motors in each wheel
I really want to go see this thing in person again, but this time really view it over, at Motorex they had a barrier around it and wouldnt let people get up close to it
I really want to go see this thing in person again, but this time really view it over, at Motorex they had a barrier around it and wouldnt let people get up close to it
4piknup
master of none
Wasnt really a thought out guess. just pulled a number from the air. All I meant was I bet its heavy (or needs a charge after 30 min).
Watching this vid makes me believe that even with 70/75kw per wheel, the thing will still be sluggish with the weight of the chassis, batteries etc
It uses A123 Nanophosphate Batteries - http://www.a123syste...ate-battery.htm
http://youtu.be/a17Lc8OzMZI
It uses A123 Nanophosphate Batteries - http://www.a123syste...ate-battery.htm
http://youtu.be/a17Lc8OzMZI
4piknup
master of none
0-walking pace at 0.2sec
