Questions tagged [car]
The car tag has no usage guidance.
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What width gate for parking 4m car at 90degrees in 10ft offset in front of home?
I have 10x30 feet offset in front of my house where 30 feet is the width of my house. The road in front of house is 20 feet wide (but I can't park on road). I have a bought a 4m long car (MarutiSuzuki ...
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Where is vertical axis of rotation when we observe car yaw?
Where is located vertical axis of rotation when we observe only car yaw, is this axis at different places for different angles of steering wheels?
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How position of c.g. affects car polar moment of inertia?
How position of c.g. affects polar moment of inertia for car in turn, why all racing cars have engine placed in the middle, has that something with polar moment of inertia?
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Alternatives of rubber sealant cement for finalizing patch-plug repair on car tyre?
I am doing a patch-plug repair for a 2mm puncture injury on my car tire:
I have two questions:
1.) The minimum I got at local stores (in India) is a 6mm patch-plug. Do I need to drill/cut the injury ...
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Would it be feasible to use the water vapor produced from hydrogen internal combustion engines to power a steam generator in a car?
In a standard internal combustion engine, exhaust temperatures typically approach 400-500 degrees Celsius for standard applications. If we consider that the primary exhaust gas of hydrogen engines is ...
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How do I find the optimal/best Gear ratios for an 3-speed transmission of an RC car?
[was told to post here, from physics stackexchange]
Says it in the title - I've done a bunch of stuff so far, but my work seems to be wrong.
I'm trying to build an RC car (pretty small, about 25 cm in ...
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Derusting car wheel's control arm by soaking in vinegar?
Would it be safe to remove the built up rust on wheels' control arms by soaking them in vinegar?
Or is Hydrogen embrittlement a concern for a run-of-the-mill, 10-years old control arm, which is (I ...
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Why exactly car tires quality affect braking distance?
It is a known fact that car tires' quality/tread depth directly affect the braking distance. I am a little confused about the exact reasons. I can understand how tires with worse quality can lose ...
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Why does a car generator employs an alternator (i.e. AC) when power supply is provided by a battery (i.e. DC)?
An alternator generates AC current, whereas batteries (as far as I know) provide/are charged with DC current. So I'm wondering, how is this apparent mismatch explained?
Do car manufacturers employ a ...
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How can I control my vehicle’s electric power steering system?
I’m trying to add lane keeping assist and adaptive cruise control to my 2017 Chevrolet Camaro, with the ultimate aim of using Comma.ai’s openpilot (or some other fork) to make my car drive itself. ...
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Is this a feasible way to straight-couple to a gear?
I have some car window motors that I would like to directly couple to some roller-type shades in my house. I would like to introduce a direct coupling mechanism rather than use some sort of chain.
In ...
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Why don't cars have manual valve timing?
This really confuses me. On the late steam engines, you let in as much steam as possible to start the engine, and "notch up" as you pick up speed so you waste less fuel. Some stationary ...
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Effect of Earth's rotation on moving vehicles
The earth rotates at a rate of 460 m/second. I wish to predict the position and approach for landing an UAV (quadcopter) on the vehicle.
I have a free-moving landing platform on vehicle that aligns ...
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how to calculate drag force (to be used later in the calculation of drag coefficient)
I'm working on a school project for car design (M segment car) we already found an open source Toyota model and can get the final answer online, but I want to know how can I calculate them
what's on ...
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How Does the Suspension Work with a Rigid Differential?
This is a basic question, but if a car's wheels are rotated by the drive shaft through the differential, which is a rigid piece of metal with gearing inside, how does the suspension system allow the ...
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Is the Stop-Start technology detrimental or good for the car?
I found a lot of articles on internet about how bad the stop-start technology is for your car and how it contributes to the faster wear of multiple parts, or how superb the feature is for the Sacred ...
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Tire engineering - are "free rolling" and "slip ratio" defined with respect to a specific tire/road material pair?
Pacjeka states the following on his introduction to tire characteristics:
The upright wheel rolling freely, that is without applying a driving
torque, over a flat level road surface along a straight ...
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How air dam reduce drag and lift?
Few questions about air dam(flexibile vertical plate on front bumper)
What is main purpose of air dam in car industry, reduce drag or reduce lift(increase downforce)?
How dam reduce drag if : a)...
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How Hard Is It Too Convert A Car To Run An Electric Engine?
With EV's becoming far more popular - In a few years, there will be a time where we will see them in scrap/dismantling yards.
Anyway, how hard is it to convert a normal car (let's say a classic) to ...
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On a car with all-wheel drive, how does the engine provide the angled front wheels with power?
Obviously, a single solid axle connected straight through the wheels would bend if the wheels to which is was connected were to rotate right or left with respect to a vertical line (i.e. be steered). ...
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Governors and acceleration effect on IC engine
If a car is moving with a constant velocity this means that resistive loads (like air drag friction) should equal the driving force from the car; but I know that the governors always cancel the effect ...
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Can the Dynosheet be read as a Fourier transform of some sorts?
I've done some quick google search on dynosheet, and what it does is that it measures the power output of the car with respect to its frequency.
My initial understanding of the dynosheet is that it ...
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Is the effect of weight-to-horsepower ratio linear?
I am wondering if a car that weighs 2,5kg and a engine power output of 1hp would be just as fast when going in a straight line like a 1250kg car with 500hp (they both would have a weight-to-horsepower ...
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What is the effect of caster angle in automobiles? What will happen if we use neutral caster?
What is the effect of caster angle in automobiles and what will happen if we use neutral caster?
We study that positive caster makes vehicle more stable at high speeds. It increases lean while ...
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Where is best place to install vortex generators if race car diffuser stall?
If flow separate in high AoA diffuser, vortex generators can help to delay separation.
Where is best palce to install VG for flat floor + diffuser configuration , in front leading edge of diffuser or ...
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Question about torque in car engines
Sometimes people say "The engine of Car A has a higher torque than Car B with both having the same horsepower" My question is : if both cars are equal in horsepower can't we just avail this ...
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Increasing air velocity through F1 car diffuser
I am looking into F1 car aerodynamics for a course that I am taking.
I understand that because of Bernoulli's law, when the velocity increases, the pressure decreases, which is good for F1 cars if we ...
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When a car with an open differential turns, why does the inner wheel slow down and the outer wheel speed up?
I asked this in the physics stack but hopefully will get more interest here. So I understand that when driving on a curved path, the inner wheel must travel a shorter distance than the outer wheel. ...
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Time period of charging a mobile phone via car
As car batteries provide only 12 V instead of ~230-250 V, I assume it takes much longer to charge them compared to a common wall socket?
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How does one deal with indeterminacy in modeling the motion of vehicles with multiple wheels? (Dynamics Question)
Consider a vehicle with four wheels and suspension (coil and dampers) rolling over an arbitrary surface. What would be the magnitude (not direction) of the normal force on each wheel? Is there a ...
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How can a car travelling at a higher speed may cause it to lift off from the ground?
Many Sports cars and other high speed and performance ground vehicles have a rear wing attached to its rear, and a splitter attached to its front. From what I understand, the rear wing (which takes ...
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How does Kia charge the high-voltage battery in EV mode?
I recently bought a Kia Ceed 2020 PHEV (Plug-in Hybrid Electric Vehicle). Its specs mention a 6-gear Dual-Clutch Transmission (DCT), a 105 kW Internal Combustion Engine (ICE) and a 44 kW Motor-...
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How does my automatic car shift without complete temporary loss of acceleration
When my car shifts gears, the car's acceleration never goes to 0. I feel that there is constant torque to the wheels throughout the entire shift.
How is this possible during a gear change?
...
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Is there a way to estimate whether the driver or co-driver picks up the smartphone?
First of all, as I am new in this very corner of stack exchange please help me by selecting the correct tags!
I'm interested in finding an alorithm, that estimates wether a phone is picked up from the ...
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What is pitch stability in cars?
Can reduction in pitching moment of a car be referred to as improved pitch stability?
Or is this term strictly only with regards to aircrafts?
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If body roll of a car is reduced, is the load or weight transfer reduced too?
Will the load transfer or weight transfer be reduced because the body roll is reduced due to stiffening of the suspension ?
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Does a single-wheel brake intervention from ESC cause one wheel to be not brakeable by the driver?
Source: https://www.kfz-tech.de/Engl/Buchprojekte/HBremse/ESP3.htm
Firstly, I don't know if this is the right StackExchange, but I will try nevertheless.
Above I posted a picture of the hydraulic ...
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Does lowering the ride height of a car 50 mm exactly lower the height of C.G by 50 mm?
Does lowering the ride height of a car $50\ mm$ exactly lower the height of C.G. by $50\ mm$ or is it higher?
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How come my calculated engine torque is so much less than the manufacturer's specifications?
Here are my calculations. Am I doing anything wrong?
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Calculating final drive force from engine torque and tyre spin ratio
Trying to build a simplified physics simulation for cars, along the lines of "Car Physics" by Marco Monster. I'm stuck at straight line acceleration. I don't know if I understand the ...
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Why do all cars seem to use "reflective" paint?
I'm not just talking about "chromed" parts. I mean the whole "paintjob", which seems to be be designed to reflect the environment as to basically be a mirror (somewhat depending on the color).
I don'...
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Meeting point of turning wheels with rear wheels
I was watching this video about how steering on a vehicle. It states:
If you track the meeting point of the left and right wheels, you can see that the meeting point always lies on the rear wheel ...
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Does the shape of a car really matter for how much gasoline it drinks?
Let's say that we have a mid-1950s "gas guzzler". Now, we take away the exterior "shell"/chassis and replace it with a modern car's. That is, it will visually look just like a modern car from the ...
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Why does the synchromesh in manual transmissions act on the output shaft?
Wikipedia has a good animation of a manual transmission, but something irks me.
If I understood correctly, in the animation, the input shaft is in green, and the output shaft is in cyan. The dog ...
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What are those large cylinder "tanks" attached to the outside of trucks for?
I've noticed this a few times, the last time today:
It's a big cylinder-shaped "tank" (for water?) outside of the front part of the truck. What's the purpose of this thing?
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Why rear wheels of the bus are covered?
There is an airport bus (Germany) which has it's rear wheels covered by the fender. Even front wheels have strange shape of fender around them (tilted toward front). What purpose of that?
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Standards for safety car seatbelts locking condition
Is there an (international) standard which determines the condition when a car seat belt locks? Which standard is it? Does the standard determines a speed in m/s of the belt, such that it locks if ...
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Determine if car is moving forward or backward
I would like to know if there is someway i can figure out if the car wheel is rotating in clockwise or anticlock wise direction.
Im working on a project which determines if car rolled back on a hill ...
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How is it possible that it took until the 1950s or even longer before they started using car belts and neck-supported seats?
I've spent a large amount of my life thinking back on past times, both long ago and "recently", meaning ~1950s to me.
A lot of things make sense, but some things just fundamentally baffle me. One of ...
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Emulate normally closed relay with 2 normally open relays
Good afternoon, I have recently ordered a normally closed relay to fix on my car's daylight-running lights. When the main lights come on the DLR should switch-off. Unfortunately amazon has delivered ...
