Invention Grant
- Patent Title: Exhaust gas heat recovery energy extraction strategy
-
Application No.: US15909150Application Date: 2018-03-01
-
Publication No.: US10415452B1Publication Date: 2019-09-17
- Inventor: Daniel J. Shepard , Eugene V. Gonze , Douglas Dickson
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F01N5/02
- IPC: F01N5/02 ; F02D41/06 ; F28D21/00 ; F01M5/02 ; B60H1/18

Abstract:
An automobile vehicle exhaust gas heat recovery system includes an engine having a turbocharger. A cooling pump provides coolant flow to the engine and the turbocharger. A combined coolant discharge header receives coolant discharged from the engine and the turbocharger. A main rotary valve receives coolant discharged from the combined coolant discharge header. The main rotary valve includes multiple rotary valves selectively distributing all of the coolant in the combined coolant discharge header to at least one of an engine heater, a heater core and a transmission oil heater during a cold start operation. An exhaust gas heat recovery (EGHR) device is positioned to receive the coolant discharged from any one, any two or all of the engine heater, the heater core and the transmission oil heater and in a path to return the coolant to the cooling pump during the cold start operation of the engine.
Public/Granted literature
- US20190271252A1 EXHAUST GAS HEAT RECOVERY ENERGY EXTRACTION STRATEGY Public/Granted day:2019-09-05
Information query