Turbocharged engine cooling apparatus
US5598705A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 12, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | May 12, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine, such as a diesel engine for a diesel electric locomotive, is provided with a turbocharger having an aftercooler. A cooling apparatus for the engine is provided with a main coolant loop having a pump and a radiator and an aftercooler coolant loop having a pump and a radiator. The coolant temperature in the aftercooler coolant loop is maintained lower than the coolant temperature in the main coolant loop when the coolant flows of the main and aftercooler coolant loops are maintained separate. Linking conduits are provided from a point in the aftercooler coolant loop to a point of lower pressure in the main coolant loop and from a point in the main coolant loop to a point of lower pressure in the aftercooler coolant loop; and valve apparatus in at least one of the linking conduits is activatable by a control in response to an engine operation related parameter between a first condition preventing coolant flow therethrough so as to maintain coolant flows in the main and aftercooler coolant loops separate and a second condition allowing coolant flow therethrough so as to allow mixing of coolant between the main and aftercooler coolant loops. Activation of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.