WATER CONDENSATE INJECTION APPLIED TO DEDICATED EGR ENGINE

• US 20160326992A1
• Filed: 05/06/2015
• Published: 11/10/2016
• Est. Priority Date: 05/06/2015
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: KEATING, Edward J.
• Application Number:
  US14/705,584
• Publication Number:
  US 20160326992A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F02B 29/0468 Water separation or drainage means
• CPC Class Codes: F02M 25/0222 Water recovery or storage
• CPC Class Codes: F02M 26/22 with coolers in the recirculation passage
• CPC Class Codes: F02M 26/35 with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
• CPC Class Codes: F02M 26/43 in which exhaust from only one cylinder or only a group of cylinders is directed to the intake of the engine
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

An internal combustion engine includes an engine structure defining a plurality of cylinders. One of the plurality of cylinders is a dedicated exhaust gas recirculation cylinder wherein the exhaust passage in communication with the dedicated exhaust gas recirculation cylinder is an exhaust gas recirculation passage that is in communication with an intake manifold that is in communication with the plurality of intake passages. An exhaust gas recirculation cooler is in communication with the exhaust gas recirculation passage. A charge air cooler is in communication with an inlet air/exhaust gas recirculation mixer. A condensate collection vessel is provided for collecting condensate from one or both of the exhaust gas recirculation cooler and the charge air cooler. An injection system injects condensate from the condensate collection vessel into the plurality of cylinders.

Claims

1. An internal combustion engine, comprising:

an engine structure defining a plurality of cylinders, a plurality of intake passages in communication with said plurality of cylinders and a plurality of exhaust passages in communication with the plurality of cylinders, one of said plurality of cylinders being a dedicated exhaust gas recirculation cylinder wherein the exhaust passage is communication with the dedicated exhaust gas recirculation cylinder is an exhaust gas recirculation passage that is in communication with an intake manifold that is in communication with the plurality of intake passages;

an exhaust gas recirculation cooler in communication with the exhaust gas recirculation passage;

a condensate collection vessel for collecting condensate from the exhaust gas recirculation cooler; and

an injection system for injecting condensate from the condensate collection vessel into the plurality of cylinders.

2. An internal combustion engine, comprising:

an engine structure defining a plurality of cylinders, a plurality of intake passages in communication with said plurality of cylinders and a plurality of exhaust passages in communication with the plurality of cylinders, one of said plurality of cylinders being a dedicated exhaust gas recirculation cylinder wherein the exhaust passage is communication with the dedicated exhaust gas recirculation cylinder is an exhaust gas recirculation passage that is in communication with an intake manifold that is in communication with the plurality of intake passages;

a charge air cooler in communication with an inlet air/exhaust gas recirculation mixer;

a condensate collection vessel for collecting condensate from the charge air cooler; and

an injection system for injecting condensate from the condensate collection vessel into the plurality of cylinders.

3. An internal combustion engine, comprising:

an engine structure defining a plurality of cylinders, a plurality of intake passages in communication with said plurality of cylinders and a plurality of exhaust passages in communication with the plurality of cylinders, one of said plurality of cylinders being a dedicated exhaust gas recirculation cylinder wherein the exhaust passage is communication with the dedicated exhaust gas recirculation cylinder is an exhaust gas recirculation passage that is in communication with an intake manifold that is in communication with the plurality of intake passages;

an exhaust gas recirculation cooler in communication with the exhaust gas recirculation passage;

a charge air cooler in communication with an inlet air/exhaust gas recirculation mixer;

a condensate collection vessel for collecting condensate from the exhaust gas recirculation cooler and the charge air cooler; and

an injection system for injecting condensate from the condensate collection vessel into the plurality of cylinders.