All Questions
Tagged with mechanical automotive-engineering
12
questions
0
votes
1
answer
27
views
Motor torque required to move a trolley
This is a real situation.
The trolley is mounted with a rack underneath it and multiple steel wheels on a steel track. The trolley is driven by the rack and pinion mechanism from a geared motor.
The ...
- 1
0
votes
2
answers
110
views
Why do some car's A-engine-mounts have bolts vs studs vs both?
I have come across engine mounts of various cars and am just curious primarily related to the "A" engine mounts where some manufacturers use only BOLTS, while some use only STUDS and some ...
- 101
-1
votes
1
answer
143
views
How can I make a needle to turn slowly CW to the final position, then return quickly CCW back to the initial position and to start again turning CW?
What I want is after the needle reaches 60 it should go back to 0 in the way showed in the image
The mechanism should preferably be based on gears which convert a steady continuous rotation to the ...
0
votes
0
answers
137
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Calculation on gearbox design
I want to design a gearbox of 70hp input motor and speed of 1400rpm. The gearbox ratio is 1:10 of 2 stage parallel arrangements.
How do I calculate for the teeth, modules and other requirements ...
2
votes
1
answer
779
views
Why is the torque of an ICE low at low rpms?
Let us consider a basic 4-stroke single cylinder, direct port fuel injected naturally aspirated engine which is given a constant throttle.
Now, why does it produce very low torque at low rpms, meaning ...
- 123
2
votes
0
answers
42
views
High articulation joints
Looking for advice or suggestions for high articulation joints (>57°) for an automotive halfshaft. Peak operating conditions are in the ballpark of ~1000RPM, ~300ft-lb torque.
I've considered u-...
- 121
1
vote
0
answers
639
views
Electronic Pressure Control, EPC
In short, the question is: How the EPC affects an automatic transmission?
I'm planning to build an automatic transmission controller module, TCM for 4F27E Ford transmission. So far I haven't found an ...
- 11
1
vote
3
answers
667
views
Pivoting trailer gate on multiple axes
I am currently trying to design a rear gate to retrofit to an existing caged trailer (similar to image 3), with the goal of having a system where the rear gate can pivot down (on its bottom edge) to ...
- 119
3
votes
2
answers
2k
views
Why do 2-stroke engines burn more oil?
Of course, most 2-stroke engines require oil to be mixed with the fuel (I appreciate there are 2-stroke engines that don't require this). Therefore, it makes sense to me that oil will be burnt during ...
- 355
0
votes
1
answer
146
views
Why are there rivets on the drum case of a band brake
Ive seen some images of band brakes and I notice there are usually two rivets (or screws) on the drum casing (encircled in the image below). What are the rivets riveted to? And why are they riveted?
...
- 113
2
votes
1
answer
297
views
Vehicle Train Towing [closed]
Why can I not tow 50,000 lbs (40,000 cargo and 10,000 Trailer bed) using multiple pickup truck each individually capable of towing 30,000 lbs?
I was told that the towing capacity does not "Add up" ...
- 51
3
votes
1
answer
59
views
Scanning and modeling my personal vehicle for aerodynamic simulation
I have this pickup truck that I love dearly. I often change the aerodynamic configuration of the truck when I use my camper shell, or roof top tent, etc.
Is there a reasonably easy way to create a ...
- 33