Questions tagged [automotive-engineering]
The automotive-engineering tag has no usage guidance.
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NOx emissions in diesel engines
What are the specific challenges and potential solutions for reducing NOx emissions in diesel engines without sacrificing fuel efficiency, considering the trade-offs between various aftertreatment ...
user13416
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How many pistons are used in Excavator Engine and how they coupled with pumps?
As I am examining the components of a Caterpillar 323D hydraulic excavator, I would like to inquire about the specifics of its diesel engine. Can you provide information on the number of pistons and ...
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Find transfer function of a drive pulley where the output is a spring force
I have the following system
and have deduced the equations of motion to be
and with the substitutions for the spring forces we get
I understand how to find the transfer function of any single ...
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Half bidirectional transmission shaft gear box solve
I'm wondering how to accomplish some kind of gear box that would reverse only the direction of one side of the two shafts on it, like in the picture below.
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Two Definitions of Kinematic Viscosity and it's Importance in Engine Oils
I have come across two definitions of kinematic viscosity and I am wondering about their relationship and significance in engine oils.
One definition describes kinematic viscosity as momentum ...
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Where do I find mechanism for paper flipping and refeeding in printers?
I've started out in engineering and can't seem to find the mechanism in printers that flip and refeed the paper back for printing. There are a few engineering YouTube videos that show machine ...
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For an ICE, how can torque to the left of peak torque rpm be lower?
This is my understanding of how a torque-rpm graph is produced. Start the engine and go to wide open throttle, there is no load and this is basically the right end point of torque-rpm graph with the ...
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How to remove ground detections of an ultrasonic sensor place in the front bumper of car? [closed]
I am working on a project to fuse the sensor information of 4 ultrasonic sensors place on the front of a car in the bumpers. The detections from the sensor would be generated not only from the ...
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Why does a newer car have a bigger engine and produce less power?
I was looking at two cars that friends have, and I was comparing the specs, and don't understand what is going on.
One is a 2017 7 seater Citroën C4, which has a 1.2L 3-cylinder petrol engine, ...
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Why excavators use Hydraulic motors for rolling or moving forward instead of diesel engine?
I am currently studying How excavators work? and came to know that "In excavators diesel engine is used to drive the hydraulic pump. The high pressure fluid from hydraulic pump is used to run the ...
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Is it possible to connect 3 rear drive Tesla motors on a single axle using their differential's?
Each Tesla motor that is sold comes attached with an inverter, open differential and a gear reduction.
The image on the right of my drawing shows more clearly my preferred most recent setup with a ...
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Calculating fuel mixture from injector pulses
I have a simulation of a fuel injection system and the result is a set of pulses that operate the injectors. I know how long the pulses are in milliseconds and I know how much fuel is emitted from a ...
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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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Combusting engine braking: is part throttle more effective than no throttle?
A counterintuitive question. An engine when in overrun generates a braking torque. This is generally considered to be because the engine is working as an air pump past a closed throttle. However that ...
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Torquemeter without Changing the Power Output of a Motor?
Is there any way to measure the torque of an engine without reducing the power output of a motor? A ton of dynamometer seem to apply a load on the engine, which works well for static tests, but how ...
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