Questions tagged [diesel]

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What developments made diesel engines suitable for personal cars in the 1970s/1980s?

Both diesel and gasoline engines were developed in the late 19th to early 20th century. Diesel engines were for the most part of the 20th century used mostly for large applications in ships, trains, ...
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19 views

Facing problem in simulating Combustion in ANSYS IC Engine Fluent

I am working on the project of Modelling of Combustion Process of Internal Combustion Diesel Engine Using Ansys ICE Fluent, in Which I am facing problem to obtain the Desired Result. My Objective: ...
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0answers
25 views

Low pressure Diesel pumping with High pressure Gasoline pump?

We are in desperate search of suitable pumps for one of our applications. We need to be able to pump Diesel fuel in a range going from 5bars to 125bars. To do such thing, I've been looking at Bosch ...
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3answers
27 views

Efficiency of an engine

What is meant by thermodynamic efficiency of an engine? and what are the factors that affect the thermodynamic efficiency of a diesel engine?
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17 views

Fabrication strategy to build larger version of our ESP

Our setup https://www.youtube.com/watch?v=uKuzshqjkYA The diesel generator exhaust is routed via our test setup. (notice the difference between ON/OFF states). Generator in test is similar spec as a ...
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1answer
288 views

What are the limiting factors on diesel engine compression ratios?

Higher compression ratios in internal combustion engines generally improve the engine's fuel efficiency. But diesel engines don't seem to go above a ratio of 25 or so. What is the limiting factor for ...
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3answers
978 views

Preheating Diesel before injection?

Significant amount of heat is lost from an engine by various means, so to recoup the energy, is it possible to increase efficiency via heating of diesel fuel prior to injection using waste engine heat ...
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3answers
94 views

Why do diesel engines tend to have larger engine displacements?

There are cars with petrol engines having 1,0 l or even less engine displacement but I have never seen a car with diesel engine having less than 1,5 l. Are there technical reasons that diesel engine ...
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3answers
240 views

Why diesel engines are considered steady torque engines?

Diesel engines are considered "steady torque", which means that torque is same no matter the revolutions whereas torque depends on revolutions for an engine that runs on Otto cycle. What is the ...
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2answers
111 views

Why are 4-stroke diesel engines preferred in new developments?

2-stroke engines seem to offer a massive advantage over 4-stroke engines. In the case of gasoline engines, there is a need for forced induction, but in the case of large diesels (which invariably ...
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1answer
99 views

Balancing Locomotive Power

My first post here. I'm curious about how power is balanced in multiple diesel-electric locomotives. I understand to that two locos can be ganged in terms of controls, to set speed etc, so that one ...
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1answer
6k views

Can a water-pump pump diesel?

After some research, I found that diesel is my choice of fuel. Now I need a way to pump it to the engine. My main constraint is price. So my question is can I use a water pump like one of these, to ...
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1answer
92 views

Diesel injector nozzle geometry

I thought of an injector nozzle for a diesel engine with an alternate combustion chamber format (somewhat like a Heron combustion chamber), and would now like to get an estimate of the size of the ...
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2answers
2k views

Diesel or Gasoline? Which one is more dangerous to our health?

I have an overall question that's been bothering me for years. Which is more dangerous for our health, a diesel car or a gasoline car? This is quite a cliche question and I can find a lot of ...
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2answers
276 views

Why is soot produced in diesel exhaust, since diesel runs lean?

Why is soot produced in diesel exhaust, since diesel runs lean? Soot is carbon particles due to incomplete combustion. But why this happens since diesel runs lean with plenty of oxygen? Thanks!
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1answer
512 views

How long can UK diesel be stored?

We have standby diesel generators that are only run a few times a year. How long can we reasonably keep the diesel stored on site before using or disposing of it? It is accepted that there is a ...
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2answers
566 views

Is a filter burst possible under fuel line pressure?

I have read a few ISO standards for performing the so-called 'burst pressure' test in which a filter or an element of one is tested to failure. I am curious whether such a failure can occur under ...
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0answers
133 views

Nozzle Sac Pressure Estimation from flow rate

I have a diesel fuel injector as shown below: The common rail pressure is set at 180 MPa. We know that some of that pressure is lost through the injector. Based on the knowledge that the injection ...
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4answers
259 views

Why do steam and diesel engines have differing cylinder configurations?

Consider a fixed steam engine, such as in a Lancashire cotton mill or pumping in a Cornish mine. Then consider a fixed diesel engine such as a large generator or ship's engine. Why does the steam ...
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2answers
999 views

Limitations of the cut-off ratio in real-world diesel engines

In an ideal diesel cycle, the cut-off ratio is set by the maximum gas temperature after combustion. That's all fine and good, but in a real-world engine what controls the cut-off ratio, and what are ...
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4answers
1k views

Does a diesel-like (ignition by compression) engine running on gaseous fuel exist?

I think, it could lead to, for example, very environment friendly and very efficient urban traffic. But I also think, it required very precise part construction. Do such things exist? At least in ...