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Diesel emission reduction. Student: Group: E. Contents. Types of emission; Ecological legislation; Emission reduction; Conclusion . 1. Types of emission. NO x. CO. C n H m. Particulate matters. 2. Ecological legislation.

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diesel emission reduction

Diesel emissionreduction

Student:

Group: E

contents
Contents
  • Types of emission;
  • Ecological legislation;
  • Emission reduction;
  • Conclusion.
1 types of emission
1. Types of emission

NOx

CO

CnHm

Particulate

matters

2 ecological legislation
2. Ecological legislation

Fig. 1. Noxemission legislation for medium and low speed diesels.

3 emission reduction
3. Emission reduction
  • Operating process optimization:
  • Miller combustion cycle;
  • Multiple injection;
  • Electronic control;
  • Exhaust gas recirculation (EGR).
  • Exhaust gas aftertreatment:
  • Selective catalytic reduction (SCR);
  • Particulate matter filtration.
slide8

3.1.1. Miller combustion cycle

Fig. 3. Miller combustion cycle.

slide9

3.1.2. Multiple injection

Fig. 4. Injection characteristic of multiple injection.

slide10

3.1.2. Multiple injection

Fig. 5. Common rail fuel system.

slide11

3.1.3. Electronic control

Fig. 6. ECU engine management system.

slide12

3.1.3. Electronic control

Fig. 7. MTU engine ECU evolution. (ADEC – Advanced Diesel Engine Control)

slide13

3.1.3. Electronic control

Fig. 8. MTU engine ECU 9.

slide14

3.1.4. Exhaust gas recirculation (EGR)

Fig. 9. Schematic diagram of exhaust gas recirculation.

slide16

3.2.1. Selective catalytic reduction (SCR)

Fig. 10. Schematic of the SCR system.

slide17

3.2.1. Selective catalytic reduction (SCR)

Fig. 11. Diagram of fuel consumption and nitrogen oxide emissions relationship.

slide18

3.2.1. Selective catalytic reduction (SCR)

Fig. 12. Genset with a 16 cylinder engine equipped with SCR system.

slide19

3.2.2. Particulate matter filtration

Fig. 13. Integration of the diesel particulate filter in the engine concept

slide20

3.2.2. Particulate matter filtration

Fig. 14. Functional diagram of the particle filtration.

DOC – Diesel oxidation catalyst, DPF – Diesel particulate filter.

slide21

4. Conclusion

  • Main concepts of the modern diesel engine:
  • Low fuel consumption;
  • Low emission.
  • It is possible due to:
  • Electronic control;
  • Interaction between all engine systems;
  • Exhaust gas aftertreatment;