Diesel Definition and 147 Threads

Hi, I have been using diesel fuel and gasoline to rinse out surplus 5gal epoxy resin jugs. They are great for projects. The resin seems to dissolve or at least emulsify into the diesel. I'm wondering if there is a way to extract/separate the diesel from the resin. The resin is not soluble in...

Dear All. Good evening I work with diesel generatora on board of ships. Our major value that is considered after oh and during the maintenance checks is Pmax - maximum cobustion pressure in combustion chamber. It had to be equeal (~ +- 5 bar between each cylinder). I am familiar with all...

Hello, Does anyone know typical values of cutoff ratio in diesel engines? And how have they evolved through time? Thank you!

Hi, I've been thinking about the solution for cleaning a water-cooled gas cooler and would love to hear some advice from the smarter people with more experience. Description - I will try to roughly explain the concept. Gas Cooler is used to decrease exhaust gas temperature. The exhaust gas...

I was wondering if there is a method to measure the actual total mass of carbon dioxide (CO2) emitted from a diesel engine used with a generator for power generation (https://www.cat.com/en_US/products/new/power-systems/electric-power/diesel-generator-sets/1000028914.html). Infrared CO2 sensors...

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 (https://www.cat.com/en_US/products/new/power-systems/industrial/industrial-diesel-engines/18398034.html – coupled with a generator for...

For my internship I have to test and certify a Marine diesel engine. We are trying to run a few tests in our workshop, but this obviously means we can't use the sea or a river as cooling. We bought an IBC tank, which can hold a 1000 liters of water. The water from the tank will be running...

I've read a lot about Gato / Balao / Tensch class submarines, the ones America used in WWII, and I can't seem to sort out the specific consequences of a dead battery. A lot of you are diesel experts, so maybe someone here knows? Historical accounts are vague. Dead batteries are certainly a big...

Diesel injector: How much pressure relative to the maximum combustion chamber pressure during the sharpest phase of detonation does an injector need to be able to overcome to inject its full charge? How much overlap is typical between injection and detonation? Water-tube boiler: Are the water...

Hi, i have this question and don't understand it. can somebody explain what i have to do. i know a ideal engine is a engine running on carnot cycle i what the cycles are i don't know what relative efficiency is and what there looking for (Q) Review the relative efficiency of ideal heat engines...

Evaluate 2-stroke & 4-stroke Diesel engines performance in terms of thermal & mechanical effiniecy HAs anybody got any links. all i can find is for petrol (2-stroke and 4-stroke). Is what i got so far any good?Thermal In a 2-stroke power stroke compared to a 4-stroke power stroke thermal...

Writing about Engines and just muddled up diagrams and confused now. Which PV diagrams is for Compression Ignition and which one for Compression Ignition. I think one on left is CI and right SI. Cheers

Hi folks, Any idea about what is it? I am required to find parts like these items which are made of stainless steel 304 and used on the post-treatment of diesel engine gas.

Hi everyone, Let's say I have an external gear pump driven by the camshaft of a marine diesel engine. The nominal speed of the engine is 1800 rpm and the capacity of the pump at nominal speed is 8 L/min. Diesel fuel is supplied to the gear pump suction at 0.4 bar g pressure via a 15 mm pipe...

Hello! I have a question that has been bothering me for a while now. If we look at the expansion step of a real otto or diesel cycle we see that while the pressure drops to near surrounding levels the temperature remains relatively high ( high T of the exhaust gas). How is that possible? How...

Hello! I have a question that has been bothering me for a while now. If we look at the expansion step of a real otto or diesel cycle, we see that while the pressure drops to near surrounding levels, the temperature remains relatively high ( high T of the exhaust gas). How is that possible? How...

I am looking at options I have available for providing Power Heat and Light to a collection of houses and barns I am planning to convert into a small holiday complex in rural France. I plan to run this complex as an agricultural small holding with holiday let's in 4 x renovated French farm...

How much Hp/Kw required to move 1.5L/m of Diesel fuel at 17.2 Bar? Please note this is for a real life problem.

I am trying to find peak pressure of a diesel engine injection pump.. It doesn't have to be exact but +/- 1000psi would be fine. The basic principle is the same as an engine. Piston goes up and covers a fill hole, once it is covered the only way it can flow fuel is through the injector, so...

In case of Otto cycle we consider that heat is immediately added to air fuel mixture(i.e constant volume heat addition) but in case of diesel cycle we consider heat addition at constant pressure and we also talk of cutoff ratios.why so??

Flash point temperature of petrol is lesser than that of diesel at the same pressure. Does this mean, if I take petrol and diesel as liquids in separate containers and heat them, rapid vapourisation (rapid enough to sustain a combustion) of petrol occurs at a lower temperature(fire point) than...

In case of diesel cycle thermal efficiency is low, because heat addition takes place at constant pressure.so can we introduce some retractable plate which sits below the piston during end of compression stroke,and retracts back after heat addition,thus providing constant volume heat addition and...

Hello guys, I am a bit confused. Is it that PV/T=constant for ALL the processes of ALL cycles, like Otto, Diesel, Rankine? I know that PV=mRT, so does that mean that PV/T=constant all the time? Secondly, I am a bit confused as I read that PV^γ=constant. What is that exactly? Where does it come...

Hi, i’m learning about the thermal efficiency of a diesel cycle at university and I'm trying to understand the equation. The first law of thermodynamics states Wnet + Qnet = 0, but one of the attachments below says Qnet - Wnet = 0 and I don't understand how this is the case. Also, for process...

Just trying to understand how efficient RDE's are thermodynamically based on a 2016 paper from Bulat and Volkov titled "Detonation Jet Engine. Part 1 – Thermodynamic Cycle" and a 2013 paper by Nordeen et. al. titled "Thermodynamic Model of a Rotating Detonation Engine": Based on these papers...

Hi all, This is related to this thread https://www.physicsforums.com/threads/solar-batteries.928495/ I just heard that in 2 - 3 years, the LNG mains will be installed in my area. I need some help to gather info on modern LNG generator performance (the latest models, just in case the older...

Hi everyone I am currently working with diesel railcars. To power the electrical systems, we have engines connected to alternators, which then connect to static inverters. The auxiliary power system runs off the static inverters, initially at 415V AC but distributed throughout the railcars at...

Without getting into the environmental controversies about fracking, why would using diesel oil in the process be useful just from an engineering standpoint? Is it used to lubricate the machinery?

I have a diesel pump doing 900 lpm with a hose reel 30 meters long, the inside diameter of the hose is 32mm. The frictional loss for 30 meters of hose is 461.04 kPa. The Viscosity of Diesel is 4.5 mPas. I would like to know the final flow rate. thanks in advance

Hi all, I have a little project on my hands and I will go into a little detail to help everyone better understand. I built a mobile boutique out of a shuttle bus for my fiancé to run her business out of. There is a large rooftop air conditioner on top of the roof for cooling and the...

Hello everyone, I have a question about a common rail high pressure pump. Most common rail pumps make use of a pressure control-valve which controls the amount of fuel that goes to the plunger. This way it is possible to control how much fuel goes to the rail, so it controls the pressure...

I'm a mechanic who is currently doing a study automotive engineering. Being someone who worked on both diesel and petrol cars I know what a higher or lower air fuel ratio (AFR) will do for both engines. However I don't fully understand how the following is possible. "Adding fuel in a diesel...

What is the difference between thermal efficiency and mechanical efficiency of an engine...and which engine is more efficient ..petrol or diesel

I was looking at btu numbers for common fuels and noticed 1 barrel of crude oil (42 gallons) contains 5,800,000 btu's with diesel fuel containing 139,000 btu's per gallon would it be possible to concentrate 42 gallons of diesel fuel to get more btu's per gallon? Also the wood into liquid fuel...

I am building a Rapid Pulse Carbonation prototype Reactor unit, I am capturing the Steam form the process and passing it though a Plate and Tube condenser to produce water, also I will capture the CO2 gas from the heating system. How would I reduce the exhaust gas heat before I pass the exhaust...

What formulas do Diesel Electric Locomotive manufactures use when designing new Locomotives? Are there any good books on the subject? Locomotive meaning train engine. I want to understand freight engine designs not passenger. Thank you, Kevin

I would like to understand if someone has tried/or atleast if its feasible to make a Electrostatic precipitators that captures automotive pollution from sources like this? Does the physics allow to do that?

What is the heat capacity values of diesel in liquid and vapour state?

I have read ( excuse me but i don't remember the reference) that a diesel engine, contrary to an engine that works on the otto cycle, is a " steady torque" engine meaning that torque doesn't change with revolutions. Could someone explain me the reason? ( in case that this statement is true )...

I am trying to calculate the nozzle sac pressure required to deliver 60mm3/ms of diesel fuel into a pressurised cylinder (19MPa). The nozzle has 5 delivery holes of diameter 0.157mm and the discharge co-efficient is 0.87. The sac diameter= 0.7 mm and the sac volume= 0.12mm3. I have tried to use...

What is the price per kilowatt or hp for the simplest, cheapest diesel engine, such as ones used for powering irrigation pumps? Say one of 1/2 MW or 1 MW. S.A.

Homework Statement Air enters a diesel engine with a density of 1.0 kg/m3. The compression ratio is 21 .At steady state ,the air intake is 30 x10-3 Kg/s and the net work output is 15 kW .The mean effective pressure (in kPa) is ... Homework Equations Pm= W.D/ Vs...

why are heat addition and rejection processes in an otto cycle constant volume processes?similarily why does heat addition occurs at constant pressure in a diesel cycle?

Hello all, In interested making a wood preservative using diesel fuel, paraffin plus an algaeicide. I am wondering if Copper Sulfate Pentahydrarte will dissolve in diesel fuel? If not are there other copper chemicals that may? thanks in advance, HarryA

Hello guys, I'm currently working on a car simulation just for fun, but I'm stuck... The force to move a car is generated by burning fuel ( to be more percise, diesel or gasolin). But there are more variables: Pressure (i know this because of turbos and such) amount of fuel amount of air (or...

How does start of injection effected by speed of the engine? According to data, it seems for higher engine speed, the SOI (in terms of degree BTC) is higher.

1. Ideal gas cycle - diesel engine cycle. You begin at some volume V1. Perform an adiabatic compression to V2. Perform an expansion to V3 at constant pressure. Next, perform an adiabatic expansion to V4, Last, it moves back to V1 at a fixed volume, while decreasing temperature back to...

I have seen many establishments having a backup electric supply using a Diesel Generator Set (AC / 3 phase). e.g. Something like in the Photo Below. What happens if the connected load grows beyond the capacity of a single generator? e.g. The unit in the photo is rated for 200 kVA. Suppose the...

Why do we want self-ignition in diesel engines but do not want it in otto engines or in other words why does self-ignition cause detonation in otto engines but do not cause in diesel engines?

What is the relation between sfc vs rpm in diesel engine and why does it happen like that ? what is relation between air flow vs rpm ??