Questions tagged [combustion-cycle]

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0answers
86 views

jumping RPMs around 60-100kms when i push it harder , lower acceleration due to this issue

I've got a 2001 Honda Civic 1.7L 4cyl. engine with an automatic transmission. My issue with it is mainly I find when accelerating faster, like merging on a highway, if I try to push it until it ...
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2answers
42 views

Simple Question: During combustion stsgep do the piston go up all the way?

Does the piston reach the max height the piston can go without fuel or oxygen I would think it can't because the oxygen molecule being squeezed in the middle. I'd say it almost fully go up but not ...
1
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1answer
60 views

What actually occurs between the fuel, and air molecules during combustion?

During atomization the fuel still remains in liquid form, it's just broken up into small droplets consisting of multiple fuel molecules. Once this mixture of fuel droplets, and air is inside the ...
2
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2answers
84 views

Is it possible for me to see oxygen, caused by valve overlap, in the exhaust gases?

Recently I put my car on the 4 gas analyser, and it gave me these results at idle: CO2: 10.64 % CO: 4.98 % O2: 1.94 % HC: 148 ppm Lambda value: 0.93/13.7AFR I have to mention that it concerns ...
0
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3answers
109 views

Why can't they add more gas particles to the pressure higher to force a piston down! [closed]

I know that car engines rely on expanding gas to cause pressure to force the piston down. My question is during the compression state, why can't they add more gas/air to cause more pressure and force ...
1
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3answers
106 views

What would happen when if fuel is added during the combustion process?

What would happen when more fuel is added during a combustion process? Will the time of combustion decrease or increase or stay the same?
4
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1answer
61 views

During Combustion how important is it to have an even burn?

During the combustion stage, How important is it to have the entire gas heated at the same temperature? And how can you go about getting the best result? Also do the kinetic energy of a gas change ...
10
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1answer
297 views

More In Cylinder Pressure Testing Questions

So I was looking at a 06 Pontiac G6 2.4l with a complaint of low power on hills. Had been at another shop to have the transmission checked and they referred the customer to us. Road test confirms car ...
3
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5answers
293 views

Could Hydrogen Be Used as a Fuel?

I understand that it may be easier/cheaper to us fossil fuel but hypothetically could hydrogen gas be effective as a fossil fuel replacement for internal Combustion Engines? Would we need to care ...
4
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0answers
59 views

1st and 2nd cylinder not combusting in dual carburetor'red setup

So I have a Maruti Esteem engine with a dual carburetor on an engine dyno and everything was already installed when I joined this lab. We seem to have a problem when trying to fire the engine. 1st and ...
0
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1answer
1k views

How long do the entire combusting cycle take?

I know that when the gas combust it do so in millisecond. But I find it very hard to believe it goes though that entire process that fast. The piston is still a mechanical part and will add a lot of ...
0
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1answer
36 views

How much pressure in ATMs is acting when a combustion happen?

When a combustion happens inside the chamber how much pressure is the moles exerting inside the close container? How could one figure this out?
14
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4answers
7k views

Do pistons keep moving when the car stops?

When you are driving and stop at a light, do the pistons still move up and down due to combustion? If not how will the engine know when to combust the fuel to keep it moving?
8
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2answers
673 views

Why do combustion chamber combustion gasses turn the engine when it only burns?

I asked this because if I have a small portion of fossil fuel and light it, the fuel will only burn. But inside a combustion chamber of a vehicle this same combustion will propel the piston downward ...
6
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3answers
195 views

Steam Engines - What are these things?

I know that steam engines are considered to be old fashioned, impractical and rarely used. Why are they considered impractical therefore rarely used? How exactly might a steam engine work to power a ...
6
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1answer
665 views

External Combustion Engines - What are these things?

What are external combustion engines? How do they work? What types of external combustion engines are there? What are all the common advantages and disadvantages of external combustion engines in ...
5
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1answer
540 views

What are the basics of the combustion cycle in wankel (rotary) engines?

I'd like to understand more intimately the basics of the wankel engine combustion cycle. What I find interesting is: Simplicity of design Use of ports for intake and exhaust Conversion of energy to ...