2. 1 S4000\Revised 30AUG00 ©2000 Detroit Diesel Corporation. All Rights Reserved. Detroit Diesel Wins 10th Annual SAE Off-Highway Award “It was DDC’s outstanding work on the Series 4000 Diesel engine that led to its selection as Company of the Year. It demonstrated to the Award Committee excellent performance relating to S4000 development in each of the five categories by which entries for the Award are judged.”- Mark Miller Award Chairman

3. 2 S4000\Revised 30AUG00 ©2000 Detroit Diesel Corporation. All Rights Reserved. SAE Article

4. 3 S4000\Revised 30AUG00 ©2000 Detroit Diesel Corporation. All Rights Reserved. Low Pressure Sensor High Pressure Sensor Control Connector Rail Pressure Regulator Series 4000 Common Rail Fuel System Two Fuel Pumps In Series Electronic Pilot Injection Engine Mounted Fuel Filters Between Fuel Pumps Full Electronic Control of Individual Cylinders Complete Injection Timing Control –Beginning of Injection –Injection Duration –No Injector Cam Limitations

5. 4 S4000\Revised 30AUG00 ©2000 Detroit Diesel Corporation. All Rights Reserved. Injectors ECM Fuel Tank Controlled High Pressure Pump with Pre-Supply Pump Common Rail Flow Limiter Rail Pressure Sensor Pressure Limiting Valve Filter Sensors Series 4000 Common Rail Fuel System

6. 5 S4000\Revised 30AUG00 ©2000 Detroit Diesel Corporation. All Rights Reserved. Series 4000 Common Rail Benefits Reduced Emissions Reduced Fuel Consumption Reduced Noise Levels Fewer Moving Parts No Mechanical Adjustments Required

7. 6 S4000\Revised 30AUG00 ©2000 Detroit Diesel Corporation. All Rights Reserved. Series 4000 Fuel Injection 250 350 450 550 650 750 1350 1450 -20-18 -16 -14-12-10 -8-6-4-2 0 2468 1012141618202224262830 s) SERIES 4000 CYLINDER PRESSURE Normal Injection Optimized Injection STANDARD INJECTION Long ignition delays result in large quantities of fuel being injected before beginning of combustion It results in high rate of pressure rise, leading to shorter life and increased noise ELECTRONIC PILOT INJECTION (EPI) Small quantity of fuel is injected in advance of normal injection It reduces the rate of pressure rise, thereby improving life and reducing noise & vibrations

8. 7 S4000\Revised 30AUG00 ©2000 Detroit Diesel Corporation. All Rights Reserved. Series 4000 Pilot (Split) Injection vs. Standard Injection

9. 8 S4000\Revised 30AUG00 ©2000 Detroit Diesel Corporation. All Rights Reserved. 700 RPM, without Pilot Injection 700 RPM, with Pilot Injection 1200 RPM, without Pilot Injection 1200 RPM, with Pilot Injection 1800 RPM, without Pilot Injection 1800 RPM, with Pilot Injection NOTE: Click on icon to activate sound. Sound will run for approximately 4 seconds, or press “ESC” to abort. (Sound levels recorded during January 2000 on 16V4000) You must have a sound card and audio software to hear the audio clips. Series 4000 Comparison Noise Levels