公开(公告)号：US11034342B2

公开(公告)日：2021-06-15

申请号：US16484872

申请日：2018-02-21

Applicant: DLHBOWLES, INC.

Inventor： Shridhar Gopalan ,  Corey Zamenski

IPC: B60T17/04 ,  B60T13/52 ,  F02M35/10 ,  B01F3/02 ,  B01F5/04

Abstract: A vacuum generator/amplifier system for gas applications and a brake booster generation method uses a vacuum amplifier system including a multi-lumen defining member comprising a modified venturi geometry having a converging section leading to a throat (lumen segment of minimum ID diameter), followed by a straight section culminating in to a diverging section and a port for output vacuum which is located after the throat at the beginning of the straight section. The converging section has a sinusoidal shape leading to the point of convergence, also called the throat, with a minimum internal lumen diameter D, and generates an amplified vacuum at the output with a gain ratio of four to one, with substantially reduced parasitic losses, even at low flows.

公开(公告)号：US10526939B2

公开(公告)日：2020-01-07

申请号：US15952755

申请日：2018-04-13

Applicant: DLHBOWLES, INC.

Inventor： Shridhar Gopalan ,  Corey Zamenski

IPC: F01M13/00 ,  F16K17/18 ,  F01M13/02

Abstract: Provided is a bi-directional PCV valve assembly, system and method. The bi-directional PCV valve may include a fluidic geometry that allows for a flow of fluid a high flow rate in one direction, forward flow, and a low flow rate in the opposite direction, reverse flow. The reverse flow includes a swirling flow that increases the pressure drop and reduces the flow rate to a third of the flow rate of the forward flow. The disclosed assembly produces a strong swirling flow (vortex) in the reverse direction and an efficient (low pressure drop) flow in the forward direction.