Patent ID: 7334399
Filing Date: 2008-02-26
Classification: F01N,F02M,Y02T

Abstract:
1. An apparatus to intermittently deliver fluid, the apparatus comprising: a primary fluid supply system configured to supply a fluid flow to a primary load within flow rate and pressure ranges; and an auxiliary fluid delivery system configured to intermittently deliver a first quantity of fluid over a first time interval, divert the first quantity of fluid from the primary fluid supply system over a second time interval, and accumulate at least the first quantity of fluid as a fluid charge with a positive energy outside of the primary fluid supply system wherein the fluid pressure of the primary fluid supply system remains within the pressure range and the flow rate available to the primary load remains within the flow rate range, and wherein the auxiliary fluid delivery system diverts the first quantity of fluid through an orifice with an effective area A calculated as where V 1 is the volume of the first quantity of fluid, T 2 is the second time interval, ΔP is the pressure difference across the orifice, and ρ is the fluid density.