we are cmcl innovations

about us

• Engineering software

• Technical consulting

• Collaborative R&D

• Training and teaching

Our modelling philosophy

Models represent our state-of-the-art “knowledge” of the universe

optimisation

application models

data modelsmodel

srm suite... realise deeper insight faster

typical challenges for our customers

Combustion

Knock, misfire, ignition, low temperature

combustion

Modern techniques

Boosting, Exhaust gas residuals,

Multiple direct injection

Emissions

CO, uHCs, Nox,soot particle dynamics

(including number density

and composition)

Fuels

Alternative fuelsFuel developmentFuel reformation

In-cylinder processes are far more than just fluid dynamics....chemistry must also be considered

why our customers choose srm suite

– Emissions

– Predictive combustion

– Critical in-homogeneities (vs. 1D)

– Amenable time scales (vs. CFD)

– Opportunity for design optimisations

– Seamless coupling with 3rd party industry standard tools

– Our tools make it simple

Benefits

srm suite...realise deeper insight faster

Some of our success stories

Design optimisation – Indian OEM, minimising emissions, maximising efficiency

Fuel development – Major Oil Company, detailed fuel models for future engine operating modes

Piston design – Leading truck manufacturer, minimising emissions through intelligent piston bowl design

Transients – International OEM, optimising strategies for transient operating mode changes

examples

CIDI

Advanced combustion

Emissions

CIDI

-80 -60 -40 -20 0 20 40 60 80

0

1

2

3

4

5

6

7

8

9

In jections advance

SO I=-53 C AD ATD C

SO I=-46 C AD ATD C

SO I=-41 C AD ATD C

SO I=-38 C AD ATD C

In-c

ylin

de

r p

res

su

re (

Mp

a)

CAD

-100 -80 -60 -40 -20 0 20 40 60 80 100

0

1

2

3

4

5

6

7

8

9

In-c

ylin

de

r p

res

su

re (

Mp

a)

C AD

Experim ent

p t1 SO I=-53 ATD C

pt2 SO I=-46 ATD C

pt3 SO I=-41 ATD C

pt4 SO I=-38 ATD C

early DI diesel engine: injection timing sweep

500 550 600 650 700 750 800 850 900 950 1000

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Open bowl shape

Eq

uiv

ale

nc

e r

ati

o

Temperature (K)

CAD=-20 CAD ATDC

CAD=-10 CAD ATDC

CAD= -5 CAD ATDC

500 550 600 650 700 750 800 850 900 950 1000

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Re-entry bowl shapeE

qu

iva

len

ce

ra

tio

Temperature (K)

CAD=-20 CAD ATDC

CAD=-10 CAD ATDC

CAD= -5 CAD ATDC

500 550 600 650 700 750 800 850 900 950 1000

0.0

0.5

1.0

1.5

2.0

2.5

3.0

Vertical side wall bowl

CAD=-20 CAD ATDC

CAD=-10 CAD ATDC

CAD= -5 CAD ATDC

Eq

uiv

ale

nc

e r

ati

o

Temperature (K)

Open

Re-entry

Vertical

mixture preparation insight

advanced combustion

Effect of charge stratification on max. pressure rise rates

Int. J. Eng. Res., Mar. 2007

Int. J. Engine Res., 8, 41-50, 2007

Local history of temperature and composition vs global averages

CAI (gasoline HCCI)

JSAE 20077195

JSAE 20077195

optimal dual injection PCCI (diesel HCCI)

800

1000

1200

1400

1600

1800

-40 -30 -20 -10 0 10 20 30 40

cycle 55

cycle 56

cycle 57

cycle 58

cycle 59

cycle 60

cycle 61

cycle 62

cycle 63

cycle 64

cycle 65

T (

K)

C A D

Partial Burn

KnockMisfire

Indicated thermal efficiency (%)

SAE Paper 2005-01-0161

HCCI operating window

emissions

Euro V, NOx = 2000 mg/kWh

Euro V = 0.46 g/kWh

Multiple steady state operating points

Scania turbocharged truck engine

uHCs and NOx

Influence of fuel blending on CO emissions

• Sub Particles: 3172

• No. Carbon atoms: 4.967x106

• Surface Area: 2.345x10-10 cm2

• Shape Descriptor: 0.768

• Radius of Gyration: 44.384 nm

• Age: 0.0917 s

3D soot aggregates

Experiment Simulation

aggregate size distribution

srm suite....realise deeper insight faster

Now you can use next-generation engine modelling tools

to solve your technical problems.

Please talk to us about your requirements...

srm suite v6.1 available now.