Method and apparatus for dynamic impulse signal attenuation simulation

A reciprocating compressor demonstration apparatus comprising:

• a compression chamber;
• a piston movable within said compression chamber;
• a crank connect to and turned by a motor;
• a connecting rod attached at a first end to said piston and at an opposing second end to said crank;
• a first crank pin and a second crank pin, said first crank pin or said second crank pin connecting said connecting rod to said crank, said second crank pin having a diameter different than a diameter of said first crank pin;
• and
• at least one transducer positioned to detect an impulse signal.

A method of simulating attenuation of an impulse signal of a reciprocating compressor, the compressor comprising a crank connected to a motor and a connecting rod connected to a piston at one end and the crank at an opposing end, said method comprising:

• connecting the connecting rod to the crank with a first crank pin;
• mounting at least one transducer on the reciprocating compressor;
• measuring a first impulse signal with the at least one transducer while the reciprocating compressor is running;
• replacing the first crank pin with a second crank pin, the second crank pin having a diameter different than the diameter of the first crank pin;
• measuring a second impulse signal with the at least one transducer while the reciprocating compressor is running;
• and
• comparing the first impulse signal to the second impulse to determine an amount of attenuation between the first and second impulse signals.