optimization of the diesel operating process

Optimization of the diesel operating process

Student: Andrey GubanovGroup: E2-18Scientific adviser: Myagkov L.L.Language adviser: Bykovskaya L.I.

Contents

1) Object of the investigation;2) Purpose and restrictions;3) Optimized parameters;4) Turbocharger;5) Structural analysis;6) Results.

1. Object of the investigation

- 1.5L 4-stroke diesel engine;- 4 inline cylinders- Ne = 32.7kWt at 4500 rpm

1.1 Diesel engine

2. Purpose and restrictions

Purpose: Ne = 82.5kWt

Restrictions: - Pz = 180 bar;

- Pinj = 2000 bar;- Matching Euro-5 ecological standard.

3. Optimized parameters

Parameter Initial Optimizedε 18 17πk

0 2.5

φia°OEV 60 50CEV 17 56OIV 17 57CIV 60 43

4.1 Turbocharger

- πk = 2.5;- G = 0.114 kg/s;- N = 153 000 rpm;- η = 0.43.

4.1. 3D model of the turbocharger

4.2 Turbocharger1) Compressor inlet2) Compressor discharge3) Charge air cooler4) Intake manifold5) Exhaust manifold6) Turbine inlet7) Turbine discharge

4.2. The turbo system operation

4.3 Turbocharger

4.3. The turbocharger construction

5. Structural analysis

Object: Compressor wheelMaterial: aluminum alloy

n = 1.51

5.1. Stress distribution inthe compressor wheel

6.1 Results

500 1000 1500 2000 2500 3000 3500 4000 4500 50000

10

20

30

40

50

60

70

80

90

Without turbocharger With turbocharger

n, rpm

Ne,

kW

t

6.1. Power capacity (Ne) dependence from revolution rate (n)

6.2 Results

500 1000 1500 2000 2500 3000 3500 4000 4500 50000

0.51

1.52

2.53

3.54

Without turbocharger With turbochargerЕвро-5

n, rpm

NO

x, g

/kW

th

Euro-5

6.2. NOx emission dependence from revolution rate (n)

6.3 ResultsParameter Initial OptimizedNe, kWt 28 82.7Me, Nm 59 176Ge, g/kWth 255 243NOx, g/kWth 3.2 2.8

Conclusion. As a result of the optimization the significant increase of power capacity and torque was obtained. The negative result is the system complication and more stringent technical maintenance requirements.

Thank you!