Patent ID: 8092193
Filing Date: 2012-01-10
Classification: F04B

Abstract:
1. A self-lubricating water-cooled piston-type water pump, comprising: (a) a unitary pump housing with a crankcase in direct water communication with a water pump inlet; (b) a low pressure chamber in direct water communication with the crankcase; (c) a compression chamber in direct pressurized water communication with a high pressure water manifold through a one-way valve, the manifold having a high pressure water pump outlet; (d) a crank shaft connected to a connecting rod and a plunger rod lubricated and water-cooled in the crankcase; (e) a compression plunger with water channels therethrough, connected to the plunger rod, in water communication with the low pressure chamber, the plunger being reciprocal within the compression chamber; and (f) a second one-way valve on the plunger in the compression chamber to let water into the compression chamber.