Study of Ignition System for Demand Voltage Reduction

Paper #:
  • 2015-01-0777

Published:
  • 2015-04-14
DOI:
  • 10.4271/2015-01-0777
Citation:
Abe, Y., Sugiura, A., Doi, K., Shibata, M. et al., "Study of Ignition System for Demand Voltage Reduction," SAE Technical Paper 2015-01-0777, 2015, doi:10.4271/2015-01-0777.
Pages:
9
Abstract:
Improving the engine efficiency to respond to climate change and energy security issues is strongly required. In order to improve the engine efficiency, lower fuel consumption, and enhance engine performance, OEMs have been developing high compression ratio engines and downsized turbocharged engines. However, higher compression ratio and turbocharging cause cylinder pressure to increase, which in turn increases the demand voltage for ignition.To reduce the demand voltage, a new ignition system is developed that uses a high voltage Zener diode to maintain a constant output voltage. Maintaining a constant voltage higher than the static breakdown voltage helps limit the amount of overshoot produced during the spark event. This allows discharge to occur at a lower demand voltage than with conventional spark ignition systems.The results show that the maximum reduction in demand voltage is 3.5 kV when the engine is operated at 2800 rpm and 2.6 MPa break mean effective pressure. However, as engine speed increases, the demand voltage reduction decreases. This paper shows the reduction effects at several engine speeds and explains why the demand voltage reduction changes by changing the engine speed.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Technical Paper / Journal Article
1992-10-01
Technical Paper / Journal Article
1980-02-01
Standard
2013-03-11
Technical Paper / Journal Article
2011-09-11
Standard
1987-08-01
Standard
2014-08-11
Technical Paper / Journal Article
2005-11-22