1985-10-01

Cylinder-Pressure measurement and Its Use in Engine Research 852067

Because cylinder pressure is the means by which the reciprocating internal combustion engine transforms the chemical energy released in combustion into useful mechanical work, it is not surprising that the measurement of cylinder pressure has been an important aspect of research on that engine since its earliest days. Acquiring data of sufficient accuracy for many quantitative uses is not a simple task. Some of the precautions that have influenced the development of pressure instrumentation and must still be exercised today are briefly considered. Then some of the techniques used for applying those measurements in engine research are reviewed. Such uses include the evaluation of the distribution of cycle work, the estimation of net heat release during combustion, the assessment of cycle-to-cycle variability, and the diagnosis of abnormal combustion. Although the examples presented are drawn from research on spark-ignition engines, most of the information in this paper also applies to diesel engines.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 43% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
X