Automotive Definition and 121 Threads

Hello all. I need to design a radiator for 43kw heat dissipation. I have used the LMTD method for finding out the contact surface area of the radiator. But I have a small problem. I cannot find the area unless i know the overall heat transfer coefficient. Can somebody please give an estimate of...

Hi There, Newbie to the forum, I work as a design engineer for a company called Helical Technology. Studied Engineering with honours in Motorsports at uni, recent graduate :) looks like an interesting forum! hopefully I can help with some queries as I hope you guys can help me with mine! thanks!

Hello, I am studying and trying to understand Powertrain / Engine mounts used in automotive such as these: http://images.gasgoo.com/MiMwMDRfMDA0Izc4MDA3NzIwMA--/auto-part-engine-torque-strut-mount-engine-mounting-for-buick-enclave-chevrolet-traverse-gmc-acadia-25840458.jpg...

Hello everyone! I was wondering if someone could give me some advice on what I should do in order to work in the automotive engineering field. Right now I am a freshman at Coastal Carolina University as an honors student in the Applied Physics major with a focus on engineering. I am on track to...

Hello everyone! My Name is Dylan O'Neal, i am from San Diego and am currently a resident of Riverside CA. I am a new student at RCC and am looking to be either an Aerospace engineer or Mechanical engineer. my hobby would be modifying cars (in particular my own), and enjoy studying the physics of...

Hi! I have recently started working at an automotive company at the body and trim section and I feel like learning everything about the area. I have had trouble finding good study material at the library and with my searches on the internet so therefore I ask you guys for some help. From...

Hi I'm about to start my 3rd year in my Engineering university and would like some ideas for my Final Year project... We have 2 options. We can either make a model/prototype of something and present it OR we can do a research on a particular field. I'm leaning more towards the research side...

Hello I am working on vehicle, for which i need to calculate following things 1. Required torque (Nm) to move vehicle from stationary position? 2. RPM of the engine at the time of torque mentioned in point number 1? Available Input: 1. Vechile Weight(kg) - 4300 2. Engine Displacement - 3455 3...

Hi all, I'm new to the forums (in posting at least!). I recently graduated with a B.S. in Applied Physics, and have viewed topics here on and off throughout my educational experience. I definitely love this forum! I've been fortunate enough to have the opportunity to buy a new car, and recently...

can i locate region in an automotive, which is safe from vibrations, by modal analysis? can i conclude that blue region in mode shape a safe region?

Hello everyone, I have a question regarding the accumulated drag curve shown in the figure below for the CFD simulation of external flow over an automobile. (It is written Vehicle Cd in the figure) It can be seen in several regions that the accumulated drag curve is dropping (ie., having a...

As you can tell from my username, I am OBSESSED with cars. This obsession is what drew me to apply to a university to study mechanical engineering. I had struggled in high school phyiscs, it wasn't until I got the hang of it in college in my statics and dynamics course that I started to really...

This may not be the proper place to ask this so forgive me if wrong. Can someone direct me to the Federal Reg that "specifically" dictates that hydraulic braking systems MUST have 45 deg. "double" flare connections? I'm involved in a protracted forum thread regarding 45 deg double flare on...

Hello, I'm in 4.th course studying automotive engineering, and there are some things that I REALLY need to know about, but I can't find any useful and COMPLETE information about it - I have searched all over the internet, but there has no ENGINEER level information. I really need help here...

Need guidance -- Inexperienced at Automotive Company... I am working in a reputed Automobile company. I am now in design optimization and localization team, to be more precise i am in door team. I am a fresher and joined two months back. I came to know that i don't have any design work like...

I'm currently trying to figure out what I should do when I'm out of the navy after my 5 years of service in early 2015. I've always had an interest in engineering (especially automotive) for a while now. I'm a huge gear head. Anyways the only issue I'm facing is I will be 25 my freshman year, so...

Battery issues in Automotive! Hi guys, I'm required to write an essay about development of 'Automotive Power', with particular reference to the Batteries. So, I'm looking for some current issues on the batteries related to its development! Any idea?! Thanks

Hi, I am trying to analyze the effects of pressure on the automotive t=ire by modeling and simulating the same in ANSYS workbench. However, I am having trouble applying material conditions to the model. I wish to use mooney rivlin material but when I apply that based on the guidance given by...

Hi, Im about to start work for an electrical component and wire harnessing manufacturing company. I am joining the company on a graduate scheme and was looking for some advice on what to expect from the job. Also if there's any background reading or knowledge i could obtain before i start...

Hi there, I'm currently doing some research into differentials and have been unable to find any indepth information on them. Every article I read covers the basics that one axle turns one direction relative to the diff casing and the other in the opposite direction so that the average of the 2...

The future of the automotive industry and transport in the us? Why will Americans never fully take to rail? Because we are adventurers by nature. The people that came to this Country had adventure in their blood. We like our cars, and we like em big and fast. So then I tell you Rail is the...

So a great deal of the population uses some form of rail or automotive transport daily so obviously the automotive/rail companies are making a lot of money but what I don't understand is why the demand for automotive/rail engineers is decreasing? I ask this question because I initially started...

Hey, by popular demand, Greg created an Automotive sub-forum under ME. Cool. I'm trying to move most of the automotive-related threads from ME to the Automotive sub-forum, but if you see some I've missed, please PM me with a link to the thread that should be moved. Thanks!

Folks, Is it true to say for standard "open" differentials that when a car is turning a corner that the torque is equal on both wheels but the power will be different based on the expression P=TW, assuming that there is sufficient traction for all wheels, ie no slip? thanks

Yohoho. I've got an N-MOSFET driving some relays that control the 'Run' circuit in a vehicle. If a FET fails, these relays must not cut off power while the car is running. The FET's I'm using are ON Semi's NCV8402. They are pretty heavy duty as it is, but I want to implement some sort of...

Hello there, (Sorry, I hope not to come on here too forward or over anyone's head). I am 25 years old (Junior), I seek information and am super hungry for it. I seek how to design cars, and all aspects thereof. I have decided to pursue establishing my own automotive engineering firm, and...

Homework Statement A vehicle weighs 3000 lbf and has an initial velocity of 68 mph. If the braking system is designed to stop the vehicle at constant power, calculate the stopping distance in feet, if the stopping power is 100 hp. m = 3000 lbf / 32.2 ft/s2 = 93.17 (lbf-s2)/ft v = 68 mph...

Hi, I'm a new member looking for a little help. I'm working on an automotive suspension project where we replace "electronic damping control" struts with a coilover that has no sensor. I'm looking to bypass the sensor and trick the ECU to thinking they are still hooked up. The resistance...

Hi there, I joined specifically to ask for help in exploring the possibility of harvesting the waste heat from a cars engine and recycling this energy to improve the engines efficiency. I'm assuming most people know about thermo dynamics, internal combustion and volumetric efficiency I:-p...

Hi all, Can anyone recommend a book on electrical motors that clearly explains and has plenty of examples on how to calculate the required motor power/rating for a automotive robot. I'm trying to work out the required power to lift a robot arm, then somehow find the correct electric motor...

5000 watt 3600 rpm 120V generator to charge 10 12V Automotive batteries. Will this work? Less or more batteries? Im wanting to put together an electric car. If i use the items above (which is what I have laying around) What size motor would best for longevity, speed ? HP? RPM? AMPs?

I am choosing a timing belt for a 60kw continuous system at roughly 1100rpm. This is a relatively low speed application. After using the belt selection programs written by Gates, Emerson and Goodyear, they all seem to point towards quite hefty installations with large pulley diameters and...

Greetings E.E. Gurus! I'm a noobie in need of your guidance! Here's the situation: I have a 5V DC, 0.25 amp (1.25W ?) power source from an oil pressure switch wire on an old truck that is activated only when the engine is running. My goal is to activate a 12V DC, 2.5 amp, 30/40W...

I thought I would try to discuss this here since there seems to be a large misunderstanding in automotive forums and I want to learn the reality, not someone's theory. basically, I have a car here in which we removed one of the many mufflers. Piping is constructed as 2-1-2. It converges to...

Hi, I'm designing a wire harness for class 8 heavy duty trucks. I need to size the wires. Everything is 12V DC. I have designed a first draft of a wiring harness and I have all of the currents and voltage drops over each wire mapped out. All the wires are in a bundle that will be run along...

Homework Statement A constant current of 3 A for 4 hours is required to charge an automotive battery. If the terminal voltage is 10 + t/2 Volts, where t is in hours, how much energy is expended? (dw) Homework Equations i = dq/dt v= dw/dq (w = work in joules) p = iv The...

Hello I have composed some figures for a flywheel system that would be used in a custom car and involve multiple flywheels. The vehicle would be use the flywheels for energy storage and recovery, and would be powered by electric engines placed on the drive axles. These flywheels would be...

I am doing a CADCAM course where I am to design a climate control system for the automobile. I am having difficulty in finding any sources of information in designing a Box (H-Type) Expansion Valve, Condenser Fan (Axial Propeller fan), Blower Fan (Backward Incinded Centrifugal Fan). I am...

I've been a huge car fanatic since I was three, you name i know it about cars, I am looking into University Bound, what career would fit my style designing car body/engine working on producing cars, tuning cars sort of things like that.

Homework Statement I have attached the assignment below. The weight of the car will be 3702lbs Homework Equations The Attempt at a Solution I am not sure if I am on the right track, but so far I have calculated the kinetic energy as; E=1/2 mv^2 0.5 x (3702/32.2) x...

Homework Statement A vehicle has a mass of X tonne. Tractive effort is Y kN. Travelling on a level road. Formula to calculate acceleration is a=f/m and tractive resistance is 250N (for example). How the devil do I work out the acceleration of the vehicle? I am totally stumped. Homework...

I came across this fellow on Youtube. His name is Scotty Kilmer, and this week, he's my personal hero! https://www.youtube.com/watch?v=B__DqK90IIc Frankly, it is people like this that restore my faithful in both the internet, and humanity as a whole. Generosity--a most sacred virtue!

Hi all new to the forum here. I'm a cnc machinist here in Austin Texas looking for some mechanical advice regarding the use of stainless steel in high strength automotive applications. Basically, I'm planning on starting up my own little business replicating obsolete and out of production...

I kind of understand Lenz's law but was wondering if anyone could tell me were does lenz's law acutally occur in automotive electrical systems.?

A truck engine transmits 28.0 kW (37.5 hp) to the driving wheels when the truck is traveling at a constant velocity of magnitude 60.0 km/h( 37.3 mi/h) on a level road. 1.Assume that 65% of the resisting force is due to rolling friction and the remainder is due to air resistance. If the...

http://www.wrcbtv.com/Global/story.asp?S=12166928 http://www.businessweek.com/ap/financialnews/D9ED5BI00.htm http://www.heraldnet.com/article/20100313/NEWS01/703139877&news01ad=1 http://www.kimatv.com/news/local/87601672.html http://blogs.zdnet.com/cell-phones/?p=3263 I think the...

I have a 2-12 volt motor circuit with a max amperage load of 24 amps. The cars charging system can fluctuate between 12.2 and 14.7 volts. This causes the speed of the motors to fluctuate too much. The problem I am having is I would like to limit the voltage on the power supply line to these...

Homework Statement You are working at a company that designs suspension systems. Some guy from the marketing department asks you to design a shock absorber that "bounces twice", meaning that after the initial bump, the spring should expand, compress, expand again and then gradually settle...

This is more of an automotive question I guess but anyways: I'm pretty familar with how torque and horsepower are related, the common equation most people think of is hp = ((tq X rpm)/ 5252). If you look at a lot of dyno graphs, the hp and torque curves always crossover around 5252...

What application cad cam & cae in automotive industries...?