1 / 7

Transportation Technology

Transportation Technology. Engine Operation: 4 Stoke Cycle. C. Stemmler. 4 Four Stroke Engine. 4 Stroke Cycle. “cycle” is considered to be a repetitive series of operations

rodney
Download Presentation

Transportation Technology

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Transportation Technology Engine Operation: 4 Stoke Cycle C. Stemmler 4 Four Stroke Engine

  2. 4 Stroke Cycle • “cycle” is considered to be a repetitive series of operations • 4 Stroke - requires the piston to move four times--up then down--four times to complete one cycle (two revolutions of the crankshaft) • most automotive & diesel truck engines are 4 stroke engines--due to emission laws

  3. Intake valve 4 Stroke Cycle -- Intake Stroke • Piston Direction down TDC to BDC • Intake Valve open • Exhaust valve closed • Movement of gasesenters cylinder • Pressure 14 hg. of vacuum

  4. Exhaust valve Compression Stroke • Piston Direction Up BDC to TDC • Intake Valve closed • Exhaust valve closed • Movement of gasessqueezed • Pressure 120 to 150 psi

  5. Power Stroke • Piston Direction Down TDC to BDC • Intake Valve closed • Exhaust valve closed • Movement of gasesrapid expansion • Pressure 800 to 1000psi

  6. Exhaust Stroke • Piston Direction Up BDC to TDC • Intake Valve closed • Exhaust valve open • Movement of gasesexpelled or pushed out • Pressure 20 to 30psi

  7. 4 Stroke Cycle - Complete • There are crankshaft revolutions in one cycle - which is degrees of crankshaft rotation rotation. two 720 180 • The crankshaft turns degrees during one stroke. once • The camshaft turns in one complete cycle - which is degrees of crankshaft rotation. 720

More Related