Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / subir nayak
The performance of a spark-ignited gasoline-fueled engine
(i.e., an Otto cycle engine) is improved when the gasoline
burns and advances quietly with a smooth flame front as it
drives the engine's cylinders' pistons rather than knocking
or pinging, which indicates that the fuel is detonating
instead of burning smoothly. The octane number is a measure
of the anti-knock quality of gasoline ... in other words,
the ability of the gasoline to resist knocking when it is
burned in a spark-ignited Otto cycle engine. Pure
iso-octane, which has an excellent anti-knock quality, has
been designated as having an octane number of 100. Samples
of gasoline are tested by running them in a single-cylinder
engine mounted in a laboratory. For example, if a gasoline's
anti-knock performance during the test is 85 percent as good
as the performance of pure iso-octane in the same test, then
that gasoline is said to have an octane number of 85. As
another example, if a gasoline's anti-knock performance
during the test is 10 percent better than that of pure
iso-octane, then that gasoline is said to have and octane
number of 110. There are two different sets of engine
operating conditions used during the tests to measure the
octane number of a gasoline. One set of conditions is used
to determine the so-called Research octane number (RON), and
another set of conditions is used to determine the so-called
Motor octane number (MON). The average of the RON and MON is
abbreviated to (R + M)/2 and that is the octane rating which
is usually posted at service stations in the US.
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
Why tampering to be done?
What do you going to observe, when a diesel engine is running?
1draw a convergent uniform and divergent circular pipe and draw hydraulic gradient line and total energy line.
what is the difference between pipe and a tube?
plz send me interview questions for POWER GENERATING CORPORATION LIMITED. my mail id is "ajaymits2004@yahoo.com"
DURING STEAM BLOWING OF PIPE LINE, A BLUISH COLOR CONICAL PATTERN IS OBSERVED AT THE END OF PIPE. WHATS THE CONCEPT BEHIND IT?
HOW CAN WE MEASURE THE L SHAPE SURFACE OF THE MOMENT OF INERTIA AND SECTION MODULUS
How do you detect earth by lam p?
hi this is ravi , i was short listed in hal assistant engineer, now im going for interview can anybody help how is the interview for mechanical stream very urgent if anybody knows forward to me my mail id i.ravibabu2@gmail.com
What does angular momentum mean?
Explain why re-heater is used in gas turbine
Is copper tube withstand under hard water say as 500 TDS.And is it cleanable by solfamric acid or by tube brushing
Do you work for many hours each day?
Why rate of condensation is higher on a polished surface compared to rusty surface ?
Explain why do the radiators in your house click when you start the heating system?
