Look at the piston, connecting rod and crankshaft carefully. In modern engines, piston is cooled by oil jet. Oil is initiated at the base of the cylinder and targets the underside of the piston. In this regard, it is important to have enough oil flow rate to strike the piston at all times. Consider an in-line 4 cylinder engine with crank radius 45 mm, connecting rod length 154 mm.

Where "s? is the distance between the crank axis and the piston pin and index ?i? represent cylinder number

Develop the piston displacement curve (as a function of crank angle), piston velocity, oil jet velocity, and oil jet velocity relative to piston velocity for 6000 engine rpm, all in one plot. Oil flow rate from a 2 mm diameter nozzle is "last two digits of your ID/10" liters/min.

Transcribed Image Text:

Troc & 800- Vac O 100- 800- -22 - PA bore V. Si = R coscp₁ + (1² R² sin²)¹/2 Troc & 800- Vac O 100- 800- -22 - PA bore V. Si = R coscp₁ + (1² R² sin²)¹/2

Answer rating: 100% (QA)

Let the piston connecting rod carefully the modern eng... View the full answer