China
Africa
Explore chapters and articles related to this topic
Gas Power Cycles
Published in Irving Granet, Jorge Luis Alvarado, Maurice Bluestein, Thermodynamics and Heat Power, 2020
Irving Granet, Jorge Luis Alvarado, Maurice Bluestein
A useful method of studying and comparing the performance of an engine experimentally is the indicator diagram. This diagram is a pressure–volume record of the events that are occurring within the cylinder of an operating engine. Indicator diagrams taken from both Otto and Diesel engines show a rounded top, as can be seen from Figure 9.14. For the ideal cycle to more closely represent the actual cycle events, it has been proposed that the ideal cycle have some combustion at constant volume and some at constant pressure. Such a cycle is called the dual combustion cycle, or simply the dual cycle. The p – v and T – s diagrams for the dual cycle are shown in Figure 9.22. Only the combustion or heat-addition portion of the cycle differs from either the Otto or Diesel cycles.
Petrol engines
Published in Allan Bonnick, Automotive Powertrain Science and Technology, 2020
The indicated power of an engine is the power that is developed inside the engine cylinder. This is measured by means of an engine indicator, an instrument that records pressure inside the cylinder while the engine is working. The graph that is produced, called an indicator diagram, shows pressure against cylinder volume.
Waste to energy conversion: Pyrolytic oil and biodiesel as a renewable fuel blends on diesel engine combustion, performance, and emissions
Published in International Journal of Green Energy, 2022
Halil İbrahim Sönmez, Fatih Okumuş, Cenk Kaya, Zafer Aydin, Aykut Safa, Görkem Kökkülünk
In-cylinder pressure trace with respect to crank angle or indicator diagram is a practical means of indicating engine performance approximately through start of ignition, ignition delay, maximum in-cylinder pressure, combustion duration, combustion phase, etc. Therefore, the pressure variation is critical when analyzing combustion for a diesel engine. Similar pressure curves were obtained at four different loads, 100% (a), 75% (b), 50% (c), and 25% (d), and as seen in Figure 3, with increasing biodiesel ratios of the order at the start of ignition angles and the angles of maximum pressure kept the same. The maximum pressures were observed for P60B40 fuel, and as the load increased, they were determined as 63.21, 68.16, 70.72, and 71.98 bars, respectively. At the same time, the minimum pressure value was obtained to be 55.86 bars at 25% load for P100.