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Why does a high octane fuel has a less tendency to knock in automobile engine?
High octane fuel has a higher resistance to pre-ignition and knocking because it can withstand higher compression ratios and temperatures without igniting prematurely. This is because high octane fuel has a higher octane rating, indicating its ability to resist knocking under higher pressure conditions in the engine.
How long can a motorcycle engine stay hot after it is turned off?
no it can not it depends on ambiant temperature and wind if it is air cooled and a little longer if liquid cooled
Why is your car not igniting when you start the engine?
The engine needs fuel, compression and spark to run. You are missing one of those.
What is anti knock property?
The anti-knock property refers to a fuel's ability to resist premature ignition or knocking during combustion in an internal combustion engine. It is typically measured using the octane rating; higher octane fuels can withstand greater pressure and temperature before igniting. This property is crucial for maintaining engine performance and efficiency, as knocking can lead to engine damage and reduced power output. Fuels with good anti-knock characteristics promote smoother operation and prolong engine life.
Why does the lawn tractor backfire when turned off?
The unburned fuel is igniting inside the muffler. Let the engine run at idle for 30 seconds before turning the key off.
What octane of fuel?
Octane rating measures a fuel's ability to resist engine knocking or pinging during combustion. Higher octane fuels, such as premium gasoline, can withstand more compression before igniting, making them suitable for high-performance engines. Regular gasoline typically has an octane rating of 87, while premium can range from 91 to 94. Choosing the right octane level is essential for optimal engine performance and efficiency.
Why is a back-fire flame arrestors required on an inboard mounted gasoline engine?
to prevent the exhausts collected in the engine area from igniting
What is an important step to the fueling process?
An important step in the fueling process is ensuring the vehicle's engine is turned off before refueling to prevent any accidents or the possibility of a spark igniting fuel vapors.
Do you have to turn motor off before pumping gasoline in your car?
YES ! If you don't, there is a possibility of either a stray spark from the engine igniting the fumes from the fuel, or a spillage of fuel onto your cars exhaust bursting into flames !
What must be attached to each carburetor on a gasoline inboard engine?
A flame arrestor. This prevents a backfire from igniting gasoline vapors in the engine compartment.
What causes the engine crackle sound in a car?
The engine crackle sound in a car is typically caused by unburned fuel igniting in the exhaust system. This can happen when the engine is running rich or when there is a misfire in the combustion process.
Why does branched-alkanes produce less knocking?
Branched alkanes produce less knocking compared to straight-chain alkanes because their molecular structure allows for more efficient combustion within the engine. The branching reduces the likelihood of premature ignition, as branched alkanes have higher octane ratings, meaning they can withstand greater pressure and temperature before igniting. This leads to smoother combustion and less engine knock, enhancing performance and efficiency. Additionally, the irregular shape of branched alkanes disrupts the formation of shock waves that contribute to knocking.
