Question

in reciprocating compressor with crank slider mechanism the obliquity ratio is 3.75 with crank radius of 0.2m the crank rotating at 20 rad/s what is the acceleration of the piston when the velocity is zero

Answer 1

$A_p=w^2r[Cos\theta +\frac{Cos2\theta}{n}]$

$w=20rad/s$

r=0.2m

$\theta =90 \because velocity=0$

n=3.75

$A_p=20^2*0.2[Cos90 +\frac{Cos2*90}{3.75}]$

=21.33m/s²