Thread Closed

Engine Pressure

 
Share Thread Thread Tools
Apr28-08, 03:23 AM   #1
 

Engine Pressure

Hello,
I was wondering if anyone could tell me or show me how to calculate the pressure inside the cumbustion chamber of a Briggs and Stratton 5hp engine. This calculation is done at 3800 rpm. Thanks



Ditch
PhysOrg.com
PhysOrg		 engineering news on PhysOrg.com

>> NASA: Austin, calling Austin. 3-D pizzas to go
>> Research suggests modular design competence can benefit new product development
>> Army ground combat systems adopts tool for choosing future warfighting vehicles
Apr28-08, 03:28 PM   #2
 
Recognitions:
Gold Membership Gold Member
Science Advisor Science Advisor
This is a complex question, and the pressure doesn't stay constant at any point during the combustion cycle.

Mean Effective Pressure is calculated by:

MEP = 1000 * (P * Nr) / (V * N)

Where MEP is in kPa, P is power in kW, Nr is the number of crank revolutions per power stroke, V the displaced volume per cylinder, and N the number of cylinders.

Note that the peak cylinder pressure will be much higher than this, but the calculation of this is far more involved.
Apr28-08, 07:59 PM   #3
 
Thanks a lot this will really help with what we are doing

Ditch
Thread Closed
Thread Tools


Similar Threads for: Engine Pressure
Thread Forum Replies
pressure, temperatur inside ic engine...... Mechanical Engineering 11
pressure inside an ic engine Mechanical Engineering 17
Engine experts, how does rod ratio effect how much pressure is applied to cyl. walls? Mechanical Engineering 20
Engine cylinder pressure Mechanical Engineering 15