CYCLE BY CYCLE VARIABILITY IN EMISSIONS OF A SPARK IGNITION ENGINE.

E. E. Milkins, H. C. Watson, L. C. Goldsworthy, Richard J. Hallworth

Research output: Contribution to journalArticle

Abstract

The exhaust emissions from a single-cylinder spark ignition engine were measured as a function of burning time. Flame propagation time was measured with an ionizabion probe, and the exhaust gas was sampled with a gas sampling valve. Electronic control logic determined the cycles to be sampled, based on the flame propagation time. Tests were carried out at full throttle, for lean, optimum, and rich A/F. The exhaust components measured were CO, HC, O//2, H//2, and N//2 using a gas chromatograph. The emission most affected by CBCV is CO. Cycles that are either faster or slower than the mean cycle have increased CO, particularly at lean A/F where a five-fold difference in CO concentration was measured. HC emissions show a 150% change for the same conditions. For other than lean A/F operation, H//2 was an exhaust product, up to 6% at rich A/F operation.

Original languageEnglish (US)
JournalSAE Prepr
Issue number741034
StatePublished - Jan 1 1974
Externally publishedYes

Fingerprint

Internal combustion engines
Engine cylinders
Exhaust gases
Gases
Sampling

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Milkins, E. E., Watson, H. C., Goldsworthy, L. C., & Hallworth, R. J. (1974). CYCLE BY CYCLE VARIABILITY IN EMISSIONS OF A SPARK IGNITION ENGINE. SAE Prepr, (741034).

CYCLE BY CYCLE VARIABILITY IN EMISSIONS OF A SPARK IGNITION ENGINE. / Milkins, E. E.; Watson, H. C.; Goldsworthy, L. C.; Hallworth, Richard J.

In: SAE Prepr, No. 741034, 01.01.1974.

Research output: Contribution to journalArticle

Milkins, EE, Watson, HC, Goldsworthy, LC & Hallworth, RJ 1974, 'CYCLE BY CYCLE VARIABILITY IN EMISSIONS OF A SPARK IGNITION ENGINE.', SAE Prepr, no. 741034.
Milkins EE, Watson HC, Goldsworthy LC, Hallworth RJ. CYCLE BY CYCLE VARIABILITY IN EMISSIONS OF A SPARK IGNITION ENGINE. SAE Prepr. 1974 Jan 1;(741034).
Milkins, E. E. ; Watson, H. C. ; Goldsworthy, L. C. ; Hallworth, Richard J. / CYCLE BY CYCLE VARIABILITY IN EMISSIONS OF A SPARK IGNITION ENGINE. In: SAE Prepr. 1974 ; No. 741034.
@article{317fcd3ac0144fe59b13c4f1559afd26,
title = "CYCLE BY CYCLE VARIABILITY IN EMISSIONS OF A SPARK IGNITION ENGINE.",
abstract = "The exhaust emissions from a single-cylinder spark ignition engine were measured as a function of burning time. Flame propagation time was measured with an ionizabion probe, and the exhaust gas was sampled with a gas sampling valve. Electronic control logic determined the cycles to be sampled, based on the flame propagation time. Tests were carried out at full throttle, for lean, optimum, and rich A/F. The exhaust components measured were CO, HC, O//2, H//2, and N//2 using a gas chromatograph. The emission most affected by CBCV is CO. Cycles that are either faster or slower than the mean cycle have increased CO, particularly at lean A/F where a five-fold difference in CO concentration was measured. HC emissions show a 150{\%} change for the same conditions. For other than lean A/F operation, H//2 was an exhaust product, up to 6{\%} at rich A/F operation.",
author = "Milkins, {E. E.} and Watson, {H. C.} and Goldsworthy, {L. C.} and Hallworth, {Richard J.}",
year = "1974",
month = "1",
day = "1",
language = "English (US)",
journal = "SAE Prepr",
number = "741034",

}

TY - JOUR

T1 - CYCLE BY CYCLE VARIABILITY IN EMISSIONS OF A SPARK IGNITION ENGINE.

AU - Milkins, E. E.

AU - Watson, H. C.

AU - Goldsworthy, L. C.

AU - Hallworth, Richard J.

PY - 1974/1/1

Y1 - 1974/1/1

N2 - The exhaust emissions from a single-cylinder spark ignition engine were measured as a function of burning time. Flame propagation time was measured with an ionizabion probe, and the exhaust gas was sampled with a gas sampling valve. Electronic control logic determined the cycles to be sampled, based on the flame propagation time. Tests were carried out at full throttle, for lean, optimum, and rich A/F. The exhaust components measured were CO, HC, O//2, H//2, and N//2 using a gas chromatograph. The emission most affected by CBCV is CO. Cycles that are either faster or slower than the mean cycle have increased CO, particularly at lean A/F where a five-fold difference in CO concentration was measured. HC emissions show a 150% change for the same conditions. For other than lean A/F operation, H//2 was an exhaust product, up to 6% at rich A/F operation.

AB - The exhaust emissions from a single-cylinder spark ignition engine were measured as a function of burning time. Flame propagation time was measured with an ionizabion probe, and the exhaust gas was sampled with a gas sampling valve. Electronic control logic determined the cycles to be sampled, based on the flame propagation time. Tests were carried out at full throttle, for lean, optimum, and rich A/F. The exhaust components measured were CO, HC, O//2, H//2, and N//2 using a gas chromatograph. The emission most affected by CBCV is CO. Cycles that are either faster or slower than the mean cycle have increased CO, particularly at lean A/F where a five-fold difference in CO concentration was measured. HC emissions show a 150% change for the same conditions. For other than lean A/F operation, H//2 was an exhaust product, up to 6% at rich A/F operation.

UR - http://www.scopus.com/inward/record.url?scp=85041969055&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85041969055&partnerID=8YFLogxK

M3 - Article

JO - SAE Prepr

JF - SAE Prepr

IS - 741034

ER -