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What else can I help you with?
What are devices used during cold starting in petrol engines?
Plug your cars heater in to the out let. Then when you get in your car in the morning it will be warm
Why is petrol not used in diesel engines or diesel in petrol engines?
Because the engines will not run with the wrong fuel to to their design. Although both diesel and petrol engines are internal combustion engines, they have differences that enable them to use these different fuels. A petrol engine ignites the fuel/air mixture by using a spark plug. A diesel engine in contrast has no spark but compresses air during the compression cycle. When air is compressed it heats up. Diesel is then injected into the cylinder and it ignites.
When did the diesel and gasoline engines replace the steam engine?
Diesel and gasoline engines began to replace steam engines in the late 19th and early 20th centuries. The widespread adoption of internal combustion engines in automobiles and trucks during the early 1900s, alongside advancements in diesel technology, contributed to the decline of steam power. By the mid-20th century, steam engines had largely been replaced in most applications, particularly in transportation. However, steam engines continued to be used in certain industries, such as power generation, for several decades thereafter.
What is the purpose of a glow plug on a ci engine?
The purpose of a glow plug in a compression-ignition (CI) engine, commonly found in diesel engines, is to preheat the combustion chamber to facilitate easier starting, especially in cold conditions. When activated, the glow plug heats up and helps ignite the air-fuel mixture by raising the temperature of the incoming air, which is crucial for achieving proper combustion in diesel engines. This aids in reducing engine starting difficulties and emissions during cold starts.
Why is air compressed in diesel engine?
In a diesel engine, air is compressed to a high pressure and temperature during the compression stroke. This high compression is necessary because it raises the air temperature to a point where it can ignite the diesel fuel injected into the cylinder. The resulting combustion generates the power needed to drive the engine. This process is key to the efficiency and power output of diesel engines compared to gasoline engines.
Does short journeys damage diesel engines?
Yes, short journeys can damage diesel engines over time. Diesel engines require a certain amount of operating temperature to burn off contaminants and moisture that accumulate during short trips. Frequent short trips prevent the engine from reaching optimal temperature, which can lead to issues such as increased carbon buildup, reduced fuel efficiency, and potential damage to components like the DPF (diesel particulate filter). Regular longer drives are beneficial for maintaining diesel engine health.
Are diesel engines set to run rich?
Diesel engines are generally designed to run with a lean air-fuel mixture, meaning they use more air and less fuel compared to gasoline engines. However, under certain conditions, such as during heavy acceleration or cold starts, they may temporarily run richer to provide more power and reduce emissions. Overall, the efficiency of diesel engines comes from their ability to operate with excess air, leading to better fuel economy and lower emissions in typical driving scenarios.
How much air pressure in comparison stroke in diesel engine?
In a diesel engine, the air pressure during the compression stroke can reach around 30 to 50 psi (pounds per square inch), but it can be significantly higher in some high-performance engines, sometimes exceeding 100 psi. This high pressure is crucial for achieving the necessary temperature to ignite the diesel fuel, as diesel engines rely on compression ignition rather than spark plugs. The compression ratio in diesel engines typically ranges from 14:1 to 25:1, contributing to the high pressures observed.
What is swirl in diesel engines?
Swirl in diesel engines refers to the rotational motion of air within the combustion chamber during the intake and compression strokes. This swirling motion enhances the mixing of fuel and air, leading to more efficient combustion and improved performance. By promoting better atomization of the fuel and a more uniform temperature distribution, swirl helps to reduce emissions and increase engine efficiency. The design of the combustion chamber and intake ports can significantly influence the swirl characteristics in diesel engines.
Why diesel engines called constant volume engines?
They aren't.Gasoline engines are (sort-of) constant volume engines while Diesel engines are (sort of) constant pressure engines.In a gas engine, the combustion process is so fast compared to the travel rate of the piston that it all happens in the same volume, before the piston has had much time to move away.In a Diesel engine combustion is so much slower that the piston will actually have time to move away while fuel is still being burnt.As the volume of the combustion chamber increases during burn as the piston moves away, the pressure will remain pretty much the same throughout the burn.
Did tanks in world war 2 run on diesel for their fuel?
Both Fuels were used during WW2, for one example German Tiger tanks used V12 diesel engines and the British Cromwell used V12 Rolls Royce Petrol engine. LandyBry
Why does diesel burn with a smokier flame than petrol?
Diesel burns with a smokier flame than petrol primarily because it has a higher carbon content and contains larger hydrocarbon molecules. During combustion, the incomplete combustion of these larger molecules results in the production of soot and particulate matter, which contributes to the smokiness. Additionally, diesel engines operate at higher compression ratios, which can lead to a less efficient burn compared to petrol engines, further increasing smoke production.
