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Questions tagged [diesel]

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Impact of generator start-up on its health

In this paper, the authors state that the wear effect of a genset star-up is comparable to the wear cause by 1 to 4 minutes running at full load. This paper dates from 1993, I am looking for a more ...
genset123's user avatar
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0 answers
39 views

Inaccurate flow rate measurements of an engine diesel fuel due to change of its viscosity

I am measuring the volumetric flow rate of a diesel fuel using "Turbines" flow meter, both in the supply and return fuel lines of an industrial diesel engine (Caterpillar 3512B – coupled ...
AEW's user avatar
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3 answers
262 views

Measurement of actual carbon dioxide mass emitted from a diesel engine

I am looking for a solution to measure the actual total mass of carbon dioxide (CO2) emitted from a diesel engine used for power generation. Infrared CO2 sensors generally measure the gas ...
AEW's user avatar
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1 vote
0 answers
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Fastest possible mean (peak?) piston speed on a Diesel engine

On a Diesel engine running distillate fuel (the kind you run in cars, SUV's, trucks, trains, boats, and smaller ships), what are the theoretical and practical limits to maximum mean piston speed you ...
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Terminology for engine life reduction due to late oil changes

This is a question for engineers working in diesel engine design or tribology. I am doing up an analytics dashboard for my father who analyses oil samples of heavy mining equipment. The diesel fitters ...
Jacob Murray's user avatar
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1 answer
2k views

How to Calculate Approximate Fuel Consumption from Engine Specs

I have a marine diesel engine, and I'd like to calculate the approximate fuel consumption based on the size of the engine, at a given number of RPM - specifically for the cruising recommended cruising ...
Adrian K's user avatar
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3 votes
2 answers
54 views

Inerting system for biodiesel tanks?

I have an interesting problem. We have an off-grid house that uses mostly solar + microhydro + batteries for most of energy needs (which include heatpump-based heating). However, we do need to run a ...
Cyberax's user avatar
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2 answers
43 views

How can I express parameters of a natural gas generator in terms of a diesel generator?

I am using the REOpt tool from the U.S. National Renewable Energy Lab to help in sizing a new battery energy storage system and solar PV array for an existing building. The building already has a ...
LShaver's user avatar
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1 answer
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Where can I find efficiency metrics for diesel engines?

I am doing long term planning for a small fleet of tugboats. A lot of the engines (propulsion, generators, hydraulics) are Detroit Diesels of various sizes (e.g., 4-71, 6-71, 12V-71). Newer engines ...
Gene McCulley's user avatar
4 votes
1 answer
306 views

In a diesel engine, does more heat leave the engine through the tailpipe or the radiator?

Diesel exhaust is hot, and there's a lot of it. Diesel radiators also get pretty hot. In a typical diesel engine, which one is dissipating more heat? EDIT: In response to a request for specificity ...
Diogenes Creosote's user avatar
6 votes
3 answers
2k views

Three-phase versus single-phase operation of a generator

My generator (a Fermont MEP-803A, 4 cyl diesel, 10kW rated) can run in three distinct modes: Single-phase 120V, in which one terminal is hot, and another is neutral Single-phase 120V/240V, in which ...
Diogenes Creosote's user avatar
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2 answers
103 views

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, ...
JanKanis's user avatar
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0 answers
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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 ...
VoltsAndNuts's user avatar
1 vote
3 answers
59 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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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 ...
touchaddict's user avatar
2 votes
1 answer
2k 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 ...
JanKanis's user avatar
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3 votes
3 answers
3k 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 ...
Palayil's user avatar
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-1 votes
3 answers
558 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 ...
Radfahrer's user avatar
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2 votes
3 answers
715 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 ...
veronika's user avatar
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0 votes
2 answers
254 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 ...
Demi's user avatar
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3 votes
2 answers
255 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 ...
Steve Taylor's user avatar
4 votes
1 answer
10k 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 ...
Dat Ha's user avatar
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1 vote
1 answer
112 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 ...
setun-90's user avatar
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2 votes
2 answers
6k 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 ...
Physther's user avatar
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3 votes
2 answers
1k views

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

Since diesel runs lean, why is soot produced in diesel exhaust? Soot is carbon particles due to incomplete combustion. But, since diesel runs lean with plenty of oxygen, why does this happen?
ergon's user avatar
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5 votes
1 answer
716 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 ...
dhewett's user avatar
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1 vote
2 answers
2k 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 ...
Peter Hristov's user avatar
7 votes
4 answers
508 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 ...
Paul Uszak's user avatar
6 votes
2 answers
2k 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 ...
Murenrb's user avatar
  • 279
7 votes
4 answers
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 ...
peterh's user avatar
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8 votes
5 answers
3k views

Why do some diesel engines run on diesel fuel and others on fuel oil?

Trucks and smaller vehicles with diesel engines run on diesel fuel which looks more or less like kerosene - less flammable than gasoline, low viscosity liquid. However larger diesel engines like this ...
sharptooth's user avatar
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