On-vehicle controllable cooling jets

J G Hawley, A Veganas, C J Brace

Research output: Contribution to conferencePaper

5 Citations (Scopus)

Abstract

A study has been undertaken to demonstrate the use and potential benefits of actively controlled coolant jets in a vehicle. Results have shown that active control of cooling jets has the potential to regulate the temperature of thermally critical areas of the cylinder head, in this case the exhaust valve bridge. In addition the temperature gradient across the head from the exhaust valves to the inlet valves is directly influenced. These capabilities offer improved control of the combustion process and enhanced durability. Furthermore the system allows heat to be rejected at much lower overall coolant flow rates than with a conventional arrangement. The technique relies on an adequate supply of coolant at a lower temperature than that within the engine and on the availability of a suitable measurement technology within the thermally critical region. Unlike passive precision cooling the active jets allow optimization of the cooling at all engine speed/load points.

Conference

ConferenceSAE 2004 World Congress & Exhibition
CountryUSA United States
CityDetroit, MI
Period8/03/0411/03/04

Fingerprint

Coolants
Cooling
Engines
Cylinder heads
Thermal gradients
Durability
Flow rate
Availability
Temperature
Hot Temperature

Cite this

Hawley, J. G., Veganas, A., & Brace, C. J. (2004). On-vehicle controllable cooling jets. Paper presented at SAE 2004 World Congress & Exhibition, Detroit, MI, USA United States.

On-vehicle controllable cooling jets. / Hawley, J G; Veganas, A; Brace, C J.

2004. Paper presented at SAE 2004 World Congress & Exhibition, Detroit, MI, USA United States.

Research output: Contribution to conferencePaper

Hawley, JG, Veganas, A & Brace, CJ 2004, 'On-vehicle controllable cooling jets' Paper presented at SAE 2004 World Congress & Exhibition, Detroit, MI, USA United States, 8/03/04 - 11/03/04, .
Hawley JG, Veganas A, Brace CJ. On-vehicle controllable cooling jets. 2004. Paper presented at SAE 2004 World Congress & Exhibition, Detroit, MI, USA United States.
Hawley, J G ; Veganas, A ; Brace, C J. / On-vehicle controllable cooling jets. Paper presented at SAE 2004 World Congress & Exhibition, Detroit, MI, USA United States.
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AB - A study has been undertaken to demonstrate the use and potential benefits of actively controlled coolant jets in a vehicle. Results have shown that active control of cooling jets has the potential to regulate the temperature of thermally critical areas of the cylinder head, in this case the exhaust valve bridge. In addition the temperature gradient across the head from the exhaust valves to the inlet valves is directly influenced. These capabilities offer improved control of the combustion process and enhanced durability. Furthermore the system allows heat to be rejected at much lower overall coolant flow rates than with a conventional arrangement. The technique relies on an adequate supply of coolant at a lower temperature than that within the engine and on the availability of a suitable measurement technology within the thermally critical region. Unlike passive precision cooling the active jets allow optimization of the cooling at all engine speed/load points.

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