Electric car Definition and 42 Threads

So there is lots of news this year about electric car owners getting stuck in the cold. There was a highway where people were stuck for hours. Emergency services could deliver gasoline to trapped cars, but electric vehicles had to be abandoned at the side of the road. Commentators are calling...

I have a crazy idea to make a 4 motor EV, but ran into an issue: the motors I want to use have a gear reduction (transmission?) That has a differential built into it. I only need to use one side of each, but I don't want to weld or otherwise destroy the other side of it. (That way I can...

I just saw a video about an electric car which has an ECO mode. In ECO mode the car has less power. So let's say in normal mode the car has 100 kW and in ECO mode 60 kW. But why should the range of the car be greater if it has less power? Because as far as I know to reach a speed of v it...

Hello, I wanted to get a physics analysis of the best way to drive an electric car for maximum range. For example, would it be more efficient to drive on side streets at a slower speed of say 30 mph, or would it be better to get on the freeway and drive 60. Should I be accelerating as slowly as...

Hello all: I have a question about electric car battery ? What is the best charging method for the battery ? Is it high ampere charging or high voltage charging ? Thanks in advance H

How works a "NOS" of a electric car?

Homework Statement An electric car (mass 1560 kg) draws power from a set of 24 batteries. Each battery supplies 12 V, with storage 95 A·h. During a test of the vehicle, it is driven at exactly 45 km/h on a level road while experiencing a friction force of 240 N. (a) What is the horsepower...

I would think that using every bit of energy that a moving electric car produces, it would be able to sustain itself. Geared alternators on each wheel, pinwheels to use wind energy to power the interior electronics, plus solar panels. Even putting stators on the rims with a coil in the hub...

Hi, I'm currently in High school so I'm uncertain whether this could be feasibly possible. I read on another thread that Wind Turbine's produce too much drag to actually be beneficial to your car and energy. BUT, they all discussed the wind turbine being on the top of the car. I was thinking...

https://www.wired.com/story/even-more-evidence-that-electric-cars-could-save-the-planet/ There's a cool map showing mpg for electrics by state in the US based on how the electricity is being generated.

Hi. I'm a student of electrical engineering, and I've always been interested in the idea of electrical cars, so I came up with a question: let's suppose we want to have a normal trip with car, and then we're not interested in going so fast with it. When we are driving in this condition, it isn't...

An article from 2015: 3-D-printed car could hit streets next year. Chris Woodyard, USA TODAY 4:48 p.m. EST November 12, 2015 http://www.usatoday.com/story/money/cars/2015/11/10/3d-printed-car-local-motors-swim/75530830/ Several companies have come out with what they call "3D-printed" cars, but...

Hi, My teacher asked that i should design a efficient energy storage system for a plug-in electric vehicle. I have no idea how i can use some equations for designing this type of car. The requirements are in below; Test cycle range: 140 miles Test cycle energy: 260Wh/mile at the output of the...

So I was reading about Tesla's plan for battery swapping. I didn't think that was such a great idea, since you would be leaving behind something that was a good fraction of the cost of the car. Might there be a better way?: So, it's the future: You've been driving around town, and used up...

If your axel in you car was magnetic with copper wire casing would that produce electricity? If so how much? If there is no resistance in that process then there wouldn't be a detrimental effect on the performance (bar added weight of the wire) With the raising popularity of electric cars it...

A lot of people have been arguing that TSLA's stock/the company in general won't take off because the demand is above the battery technology at this time. I'm a junior in college studying physics but will probably either switch to finance and do stocks because i like it more or i was double...

hey guys, I am building an electric go kart for a final project, and I'm just trying to get my initial justifications correct, with respect to the classical physics involved. SPECS: i was the car to be able to reach 15km/h, The total weight of the car will be approx 200kgs. the size of...

I’m trying to figure out how to track the energy production from a battery to a motor as in an electric car. For example, the basic and primary components of an electric car are as follows: battery > controller > electric motor > driveline ====> car moves What I’m trying to figure out is...

Assuming you have an electric car that can go 100miles at 70mph on a single charge, what kind of range could you get with the following configuration? An electric car that runs off the main battery bank. Vents on the outside of the car funnel air to a Tesla turbine while the car is in motion...

Homework Statement There is 14 kg of mass kept on a chassis (consider chassis weightless). Chassis is having 2 identical rear wheels and 2 Steel caster ball wheels at front. Consider the weight distribution to be equal on each of the wheel. All wheels are coupled to a DC motor-gearbox (1:1)...

Hello, (1) Is the below equation for calculating the maximum velocity for attaining the alleged maximum distance correct, i.e. at what speed should an electric car travel for it to cover the maximum distance? E of battery - (F rolling friction + F air drag)*(alleged maximum distance) =...

If we consider the kinetic energy of say a car like Nissan Leaf moving at its top speed we have : K.E. = 0.5 x M x V2 Given that M = 1521 kg, V (top speed) = 150 km/h ≈ 42 m/s K.E. (@ top speed) = 1,341,522 ≈ 1.34 x 106 J ... (1) [1?] What connection does this value have with the battery...

Hi all. I planning to build an electric car at home. I have no expierence with electric vehicles but I studied physics at high school and know a fair amount about cars. After seeing homebuilt electric cars on you tube and elswhere I've been inspired to try bulid one also. I am going to try...

Hi there, I'm just wondering if anybody would know of a way of determining the probability of an event. I trying to figure out how I could calculate the probability of a charging station for an electric car being available when a person arrives at their destination. I have the...

I am mechanical engineer and working on a project of electric car havin a wind mill on the top. i am using 7 lead acid batteries and a DC series wound motor. The car has a wind mill for the recharging of the batteries. I have read other thread on this forum which states that the wind mill on...

I was reading an earlier post about having a wind turbine embedded in a vehicle to generate electricity as it moved. I came to this site after having this thought last night. But I realized immediately that drag and weight would be counterproductive. However, I did ponder an alternative...

hi friends i am working on project that is to generate electricity by using turbine which is integrated in the front portion of an electric car to charge the battery in turn which is used to propel the car. may i know how much efficient it is and what are the problems may occur to implement this...

Hi, (Firstly, This is not a perpetual motion discussion. Nor am I suggesting anything of the sort. I'm just wondering where the energy losses enough to stall the system creep in.) ok, I was having a discussion at lunchtime which I didn't have an answer to , so I'll post it here: A...

The EV1 was produced in 1996 and could get up to 150 miles on a single charge, "The NiMH batteries, rated at 77 amp-hours (26.4 kWh) at 343 volts, gave the cars a range of 75 to 150 miles (120 to 240 km) per charge, more than twice what the original Gen I cars could muster."...

Hello, I was surprised to read today that one of the bigger impediments to electric cars coming to market is the fact that the 'quick' chargers require installation of a separate power line. Why? Every house, apartment, condo, etc in America pretty much has a 220 plug for the dryer. Why can't...

There's a lot of hype about saving money by buying a hybrid but what I want to know is if you save money in general and not just gas? I understand that you can get 100 or 200 extra miles per gallon but you still have to plug your hybrid into a power outlet. Are you saving money by paying more...

I'm pretty sure someone somewhere has already built one, I've gone over the concepts involved and it does seem both practical and possible. The idea is this: electric-powered car that is recharged by several wind-generators(essentially fans on the roof) that recharge the batteries once the car...

in fact, i want to ask, What do prevent the car companies to produce Standard Battery , and all companies use this SB in their cars, where the number of used SB will depend on the car specifications , by this method we can easily go to replace the batteries instead of stop the electric car and...

Ok, I am not sure if this is the right category to post this in but I am a mechanical engineering "sophomore" student and I want to try my own project, so here goes: I want to build a Go-Kart/Electric Car, I don't need everything to be perfect yet but I just want to make sure the calculations...

Interesting little video: http://video.google.com/videoplay?docid=-2548496593303272917&ei=a9DqSPGUMImwrQKw3cmZAQ&q=WHO+KILLED+THE+ELECTRIC+CAR

new? electric car idea...! Hey guys, I don't have any formal education in engineering (yet :D) but i think i have had a reasonable (and original??) idea for powering electric cars and I was wondering if it could possibly work. Here goes... My idea is to have some sort of magnets in an...

Anyone with any idea about the basic internal design & engines in an electric car?

Hello everyone. Currently my brother and I are considering converting a gas engine car into an electric engine car. I'm still not exactly sure how well the vehicle we have chosen for this project will work. The main issue I'm worried about is weight. So, I was wondering if, in general, a...

electric car help :) A projected electric vehicle makes use of storage batteries as its source of energy. Its mass is 1560 kg and it is powered by 24 batteries, each 12 V, 95 A hr. Assume that the car is driven on level roads at an average speed of 32.4 km/hr and the average friction force is...

I had the pleasure of watching "Who Killed the Electric Car" in a speak easy theatre yesterday. I highly recommend it. The lengths that GM went to to make sure none of the EV-1's survived are incredible. If you haven't seen the movie go do so. If you have seen it let's talk about the...

I am concerned about our environment, and do my best to keep it clean as much as possible. I am going to buy a car soon, and I am looking for an electric car. When I was doing my O'levels, I learned about electromagnetic induction, producing an electric current from changing magnetic field...

I just read an article about Tesla's Electric CarLink The Car supposedly can run forever and does not need charging. It in effect runs on free energy. The article seems absurd but I thought that considering Tesla made this, there might be some substance to it. What do you think? Is it...