1. 1999 International B250 7.3 DIT (Ford Powerstroke) OE crankcase gas vent to intake system

2. 2000 International DT444E OE Crankcase deflector rotated 180 o on DT444E with original open crankcase vent tube configuration -Picture from, “A Multi-City Investigation of the Effectiveness of Retrofit Emissions Controls in Reducing Exposures to Particulate Matter in School Buses, Clean Air Task Force Crankcase Study, published Jan 2005 Cummins Enviroguard open crankcase system

3. 1999 International B250 (Ford Powerstroke) Extent of Intake Air Fouling in OE configuration Crankcase Gas Entry Port Turbo clean

4. OE Piece & Racor 3550 Direct Fit Kit (shown after test)

5. Racor 3550 Kit Installation

6. Racor Filter Cartridge- After Test Outlet Clean

7. FTP’s performed Baseline in OE closed crankcase configuration Baseline with open crankcase and blowby gas measurement from OE closed crankcase system –Done by removing rubber hose from intake air and rotating 90 degrees and connecting to blowby measurement apparatus. Intake Air port sealed. Control with Racor 3550 and AZ Purimuffler –This will afford performance measures for engines with closed and open crankcase configurations –Will provide worst case (smallest contribution) crankcase contribution

8. Racor CCV Product Line Industrial engines LHDE, MHDE MHDE, HHDE Large Non- road engines