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Hands-on Clinic => Skills and Trades => Topic started by: dakota nelson on Aug 13, 2021

Title: Why does a 4-cylinder engine have very little, if any, primary vibration?
Post by: dakota nelson on Aug 13, 2021

Question 1

Which of these is a primary cause of secondary vibration?
◦ Harmonic balancer
◦ Pistons
◦ Flexplate
◦ Connecting rod big ends

Question 2

Why does a 4-cylinder engine have very little, if any, primary vibration?
◦ Uses a splayed crankshaft
◦ Two cylinders fire at the same time, reducing the primary vibration
◦ Two pistons traveling upward at the same time two pistons are traveling downward
◦ Bore is small, reducing the primary vibration
Title: Why does a 4-cylinder engine have very little, if any, primary vibration?
Post by: yuyiding on Aug 13, 2021

Answer 1

Pistons

Answer 2

Two pistons traveling upward at the same time two pistons are traveling downward
Title: Re: Why does a 4-cylinder engine have very little, if any, primary vibration?
Post by: Orbital on Oct 21, 2021
thank you