All Questions
Tagged with automotive-engineering combustion
14
questions
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How to calculate clearance volume in internal combustion engine of a tractor?
To begin with, a tractor engine is provided to identify and calculate the terminologies associated with it. The bore diameter and stroke length is given as 15.84 cm and 8 cm respectively. Having ...
0
votes
1
answer
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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
-1
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3
answers
126
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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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4
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2k
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Throttle position as a function of engine torque and speed
In the figure attached showing the throttle position versus an IC engine produced torque, I didn't understand why does the torque value at a specific rpm vary for different throttle positions. My ...
- 50
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2
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Why this engine can work without a timing belt? [closed]
Is it possible that this tiny engine work without timing belt? I have seen the schematics of it and it pretty much rely on holes in the middle of piston to get the hot gas out whereas the ignition is ...
2
votes
1
answer
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Effect of Pressure on Combustion efficiency (of hydrogen) in excess air
Can somebody explain relation between combustion efficiency and pressure in lean mixtures using any kind of chart or mathematical equations?
At first glance I thought, combustion efficiency increases ...
- 187
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1
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81
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What are the non-practical features of a sterling engine that cause the internal combustion engine to be used instead?
What are the non-practical features of a sterling engine that cause the internal combustion engine to be used instead (in a car)? (e.g. price, size, the power to weight ratio, etc.)
Can you name any ...
- 31
1
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2
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201
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Where the Water Have Gone from Engine from a Combustion Process (C8H18+12.5O2==>8CO2+9H2O)?
During studying engine's exhaust as I asked here, I have to go far. The thing I though is quite simple, the fact is complicated. Thence I knew that there is water produced in combustion process. The ...
- 219
1
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1
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Why to compress the hydrogen + air mixture in Hydrogen ICE engines when combustion efficiency of hydrogen at 1 atm is already high?
ICE Engines are designed to burn the fuel and air mixtures at high pressures to increase the combustion efficiency. But hydrogen combustion efficiency is already high at 1 atm and at constant Volume ...
- 187
1
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0
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228
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Measurement of ICE torque
I'm seeking a precise description of engine torque.
We talk about torque in terms of the twisting force that the piston exerts on the crankshaft with a radius equivalent of the rod throw.
Assume these ...
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9
votes
5
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534
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Why is "regular" gasoline standard instead of something more knock-resistant?
The standard light petroleum distillate for vehicle engines, "regular gasoline," is (or is equivalent to) some mix of heptane (C7) and octane (C8). Higher proportions of C8 are more knock-resistant, ...
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2
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How can I estimate the rate of consumption of oxygen in a car engine?
I need some approximate figures for how many litres of oxygen per minute a typical car engine requires. How would I estimate this?
- 521
7
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4
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How does a diesel internal combustion engine start even though there are no spark plugs?
I was just wondering how a diesel engine starts, given that there are no spark plugs. How does it build up 'momentum' for that first explosion in the cylinder? Does it have something to do with the ...
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14
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3
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What happens when you put the wrong type of fuel in an internal combustion engine?
What happens to the working of petrol engine when it is emptied and filled with diesel or to a diesel engine emptied and filled with petrol? Will the engine be able to operate and, if not, why not?
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