A guide to fuel efficient cars, and prototypes being designed, built or proposed.
Showing posts with label Technology. Show all posts
Showing posts with label Technology. Show all posts
Saturday, 17 March 2012
Mitsubishi i-miev - Electric Production Car
Mitsubishi's 'i' city runabout transforms into the i MiEV for the electric version, and is an acronym for Mitsubishi innovative Electric Vehicle. It retains the 5 door hatchback layout of the petrol engined version. Re-badged by Peugeot as the iOn and by Citroen as the C-Zero.
Powered by a 66HP - 133lb/ft permanent magnet electric motor, spinning at up to 8,000 RPM, the i-MiEV has a single speed transmission which takes it to a maximum speed of around 80MPH. Mitsubishi say the i-MiEV has a range of 93 miles, but as with all electric vehicles this can be affected by driving conditions, having lights on, radio, air-con or poor weather conditions.
The traction battery pack, located below the i-MiEV’s floor, consists of 88 lithium-ion 3.7V/50Ah cells connected in series to deliver 330V/16kWh, and powers the electric motor (via the inverter), air conditioning and cabin heater. Other devices are powered by a conventional 12V auxiliary battery, charged by the traction battery via a DC-DC converter integrated with the on-board charger. Safety features include a cell monitoring device, electrical leakage detector and a very strong protective casing. Regenerative braking is included to help top up the battery when going downhill or braking. A full re-charge should take 7 hours from a household supply.
The i-MiEV has it's heavy battery pack placed low down in the car to aid handling with a low centre of gravity.
In Japan Mitsubishi have taken the unusual step of configuring the i-MiEV to power hosehold electrical goods in an emergency.
Thursday, 15 March 2012
Wrightspeed X1 - Prototype Electric Car
Ian Wright and his Wrightspeed organisation converted an Aerial Atom to electric power to show off their EV technologies, Wrightspeed's usual day-to-day business is producing an advanced Hybrid drive train which retro-fit's to Trucks. Electric Motors and a clever software controlled 2 speed gearbox system allied to micro-turbine generators make for an extremely lightweight and fuel-efficient range extended electric vehicle.
The X1 may not have the company's range-extending capabilities but it does have raw speed on it's side, depending on gearing and configuration the X1 is capable of 0-60 MPH in around 3 seconds and with massive amounts of torque available from virtually a standstill, can out accelerate most conventionally powered vehicles.
Fuel consumption comes in at about 170 MPG-e and depending on gearing it has a top speed around the 100 MPH mark.
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