公开(公告)号：US20200156022A1

公开(公告)日：2020-05-21

申请号：US16192614

申请日：2018-11-15

Applicant: Caterpillar Inc.

Inventor： Satya Ramakrishna Manda Venkata Naga ,  Kevin L. Martin ,  Paul Arthur Zwart ,  Andrew M. Denis

IPC: B01F5/04 ,  B05B7/04 ,  B05B7/10

Abstract: A nozzle including an interior cavity, a structure disposed within the interior cavity, a first channel fluidly connected to the interior cavity, one or more second channels fluidly connected to the interior cavity, and one or more outlets coupled to the interior cavity. The structure includes a bottom impinging surface that is at least partially concave, one or more legs that support the bottom impinging surface, and a top surface located opposite the bottom impinging surface.

公开(公告)号：US09670818B2

公开(公告)日：2017-06-06

申请号：US14820743

申请日：2015-08-07

Applicant: Caterpillar Inc.

Inventor： James Harris Mutti, Jr. ,  Shivsinh Hitendrasinh Parmar ,  Satya Ramakrishna Manda Venkata Naga ,  Purna Chander Nalla

IPC: F01N3/20 ,  F01N11/00

CPC classification number: F01N11/00 ,  F01N3/206 ,  F01N3/2066 ,  F01N2550/05 ,  F01N2610/02 ,  F01N2610/08 ,  F01N2610/1433 ,  F01N2610/144 ,  F01N2610/1473 ,  F01N2610/1493 ,  F01N2900/1808 ,  Y02T10/24 ,  Y02T10/47

Abstract: A reductant dosing system is disclosed as having a pump, and suction, discharge, and return passages. The system may also have a return valve, an air passage, and an air valve. The system may additionally have an air passage pressure sensor, a discharge passage pressure sensor, and a controller. The controller may be configured to calculate a first average pressure inside the discharge passage while the pump is off, the air valve is open, and the return valve is closed; and calculate a second average pressure inside the discharge passage while the pump is off, the air valve is open, and the return valve is open. The controller may also be configured to determine a pressure drop inside the discharge passage based on the first and second average pressures, and to determine that priming is successful based on the pressure drop and pressures of the discharge and air passages.