Piston Oil Cooling Jets
WARNING: This page is about a different car, the 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.
| ITEM | DESCRIPTION |
|---|---|
| 1 | Piston oil cooling jet (4 off) |
| 2 | Cylinder block |
Piston oil cooling jets, located in the cylinder block, provide piston and piston pin cooling and lubrication. Each piston oil cooling jet has 2 outlet nozzles which spray oil onto the underside of the 2 adjacent pistons, 1 from each cylinder bank. Each jet is located in a threaded hole between the pair of cylinders and is secured with a bolt. The piston oil cooling jets are supplied with pressurized engine oil from the variable flow oil pump via a drilling in the cylinder block.
Each jet sprays oil onto the inside of the piston. The oil coats the underside of the piston to help cool each piston crown. Additionally, oil lubricates the small end bearing and gudgeon pin.