#sscje #mechanical #gearinstitute
Click here to download our app
https://edumartin.page.link/jLFr
Join telegram channel
https://t.me/gearinstitute

JE की तयारी के लिए App Download करें
https://edumartin.page.link/jLFr


Join our whats app channel
https://whatsapp.com/channel/0029VaCPbFbE50Uee2zw6944

ALL IN 1 AE/JE EXAM LIVE CLASSES (TECHNICAL +NON TECHNICAL) (1 YEAR VALDITY)
https://bit.ly/3FOEcme
ALL IN 1 AE/JE EXAM LIVE CLASSES (TECHNICAL +NON TECHNICAL) (2 YEAR VALDITY)
http://bit.ly/3uPICTG
ALL IN 1 AE/JE EXAM LIVE CLASSES (TECHNICAL ONLY) (1Year Validity)
http://bit.ly/3ZR9Pne
ALL IN 1 AE/JE EXAM LIVE CLASSES (TECHNICAL ONLY) (2Year Validity)
https://bit.ly/3O6sndO

SSC JE RECORDED COURSE (2YEAR VALIDITY).
http://bit.ly/3CSOuzH
SSC JE RECORDED COURSE (1YEAR VALDITY)
http://bit.ly/3W9LVjv

Mechanical MCQ Book written by Er.Harvinder Singh
Order your copy click here
https://bit.ly/MCQBOOK




Strength of material Full Syllabus
https://bit.ly/38jyEBX

Fluid Mechanics Full Syllabus
https://bit.ly/3uNsG3z



Theory of machine Full Syllabus
https://bit.ly/3xRPQJk

Thermodynamics Full Syllabus
https://bit.ly/3k7lXws

Material Science full syllabus
https://bit.ly/38pU5Bf

Machine Design Full Syllabus
https://bit.ly/3k7lr1u

Automobile Engineering Full Syllabus
https://bit.ly/3wMMm8S

Refrigeration and air conditioning Full Syllabus
https://bit.ly/3Q2tHyy

Power plant engineering
http://bit.ly/3kGoj9v

Workshop Technology
https://bit.ly/3QGsNIo
Industrial Engineering
https://bit.ly/3vvyyjq
What is bore and stroke
An engine's bore is the diameter of each cylinder, while the stroke is the distance within the cylinder the piston travels. ... Similarly, a bigger bore means bigger valves, which means it can take in and push out more air in each cycle. And more air means more power


How does bore and stroke affect engine performance?
Engine friction is affected by the stroke-to-bore ratio because of two competing effects: crankshaft bearing friction and power-cylinder friction. As the stroke-to-bore ratio decreases, the bearing friction increases because the larger piston area transfers larger forces to the crankshaft bearings


Which is better bore or stroke?
The short answer is that a bigger bore is generally the best way to get more power. ... A bigger bore with a shorter stroke also allows an engine to rev higher, which creates more horsepower. Conversely, a long stroke is generally better for fuel efficiency, because it reduces surface area during combustion.


How do you calculate cc from bore and stroke?
0.7854 x bore x bore x stroke x number of cylinders. In the above example we have used centimetres to calculate capacity in cubic centimetres. To find the displacement in cubic inches simply substitute measurements in inches: 8.1cm = 3.189" & 7.76cm = 3.055" giving 0.7854 x 3.189" x 3.189" x 3.055" x 4 = 97.6 cu.in


Do oversize pistons give more power?
red92si said: With oversize pistons, you increase the displacement of your engine. The more displacement you have... the higher the power is able to go. To install pistons that are oversized, you fist must bore out your existing cylinders to fit the new pistons.



What is super long stroke?
Bore and Stroke in mm, number of cylinders,PS in KW at service speed and RPM at service speed. The long stroke engine has a stroke bore ratio of 2.5 , whereas the super long stroke engine has a bostroke bore ratio of 4. ... Longer stroke results in higher compression ratio as well as increase in length of the card.