What is the temperature of the exhaust gas

Assignment Help Mechanical Engineering

Reference no: EM13711575

A 4 cylinder 1.6 liter SI engine has a compression ratio of 10, connecting rod length of 16.8cm, and a crank offset of 4.5 cm. The engine is operating at 3000 RPM and wide open throttle. The exhaust pressure is 100 kPa. The intake valve closes at 20 degrees after BDC and the spark occurs at 15 degrees before TDC. The exhaust valve opens 40 degrees before BDC. Assume at the start of compression (when the intake valve closes) the temperature in the cylinder is 70 degrees C and the pressure is 100 kPa. The peak temperature is 3500 C and the peak pressure is 9200 kPa.

a) What are the temperature and pressure at the start of combustion when the spark fires?

b) What are the temperature and pressure when the exhaust valve opens?

c) What is the temperature of the exhaust gas?

Reference no: EM13711575

Questions Cloud

Cauchys theorem for a triangle : The theorem stated below is followed by statements from its proof. For each of the numbered statements provide a short comment that explains or justifies it.

Steady flow operation and constant specific heat for water : A water fountain consume 24.1 amps (operating at 110 V) to chill water from 23 C to 5 C. It is known that heat is rejected from the unit at a rate of 9.5 kW. Assuming steady flow operation and constant specific heat for water (at 25 C)

Fraction of heat release at constant pressure conditions : A four cylinder, 3.6 litter CI engine operates with a compression ratio of 18 and an air fuel ratio of 17. The engine operates on a dual cycle. The maximum pressure is limited to 12MPa and the maximum temperature is limited to 3600 K. Assume that at ..

What is the air-fuel ratio : A fuel consisting of 20% ethanol and 80% isooctane on a molar basis is burned with air in an engine. Write the balanced chemical reaction when this reaction is stoichiometric. What is the air-fuel ratio?

What is the temperature of the exhaust gas : A 4 cylinder 1.6 liter SI engine has a compression ratio of 10, connecting rod length of 16.8cm, and a crank offset of 4.5 cm. The engine is operating at 3000 RPM and wide open throttle. The exhaust pressure is 100 kPa. The intake valve closes at 20 ..

Mixture temperature leaving the mixing chamber : In air-conditioning systems, streams of cold and warm air are mixed to get air with the right temperature. Consider a mixing chamber into which cold air enters at 8C and 100 kPa at a rate of 0.55 m^3 /s and warm air enters at 300C and 100 kPa. The ra..

Matlab code to calculate and plot the second explosion limit : Write a matlab code to calculate and plot the second explosion limit (2k1=k9[m] for the H2- air mixture with Phi=0.5 within temperature range of 500-1000k compare the line with the explosion limit in the textbook and see if they qualitatively agree. ..

Rooftop solar hot water heater with collector areas : A rooftop solar hot water heater with collector areas of 8 m2 and storage of 640 L is installed in Phoenix, Arizona on a house that uses 160 L/day of hot water at 60°C. 70% of the total energy required is supplied by solar energy (the solar fraction ..

What is the volume of the water at the end of the process : A piston-cylinder device containing .1 Kg of saturated liquid water, initially at 1 bar, is heated at constant pressure until the temperature is 140C. an electrical heater within the device is turned on and is allowed to pass a current for 5 min from..

User Account

All Pages