O;kolkf;d ijh{k.k fjiksVZ la[;k No.: PT-49/413 COMMERCIAL ...srfmtti.dacnet.nic.in/Test reports...

O;kolkf;d ijh{k.k fjiksVZ la[;k@ No.: PT-49/413

COMMERCIAL TEST REPORT ekg:@ Month: August, 2013

BATCH TEST

VST SHAKTI 130 DI POWER TILLER

Hkkjr ljdkj Government of India d`f"k ea=ky;] (d`f"k ,oa lgdkfjrk foHkkx)

Ministry of Agriculture, (Department of Agriculture and Cooperation) nf{k.kh {ks= d`f"k e'khujh izf'k{k.k ,oa ijh{k.k laLFkku Southern Region Farm Machinery Training and Testing Institute VªSDVj uxj] xkyZfnUus - 515 731, ftyk% vuariqj(vka.iz.) Tractor Nagar, Garladinne- 515 731, District: Anantapur (A.P.)

Website: www.srfmtti.dacnet.nic.in E-mail: [email protected] Tele./FAX: 08551-286441

mailto:[email protected]

PT-49/413 VST SHAKTI 130DI POWER TILLER

COMMERCIAL (BATCH TEST) 1

SOUTHERN REGION FARM MACHINERY TRAINING & TESTING INSTITUTE - ANANTAPUR

Manufacturer

Applicant

:

:

M/s. VST Tillers Tractors Ltd.,

P.B. No. 4801, Mahadevapura Post,

Whitefield Road, Bangalore - 48.

The Manufacturer

VST SHAKTI 130 DI POWER TILLER

Report No. PT-49/413 Month: AUGUST Year: 2013

GOVERNMENT OF INDIA

SOUTHERN REGION FARM MACHINERYTRAINING AND TESTING

INSTITUTE, TRACTOR NAGAR, PO: GARLADINNE – 515 731,

DISTRICT: ANANTAPUR (A.P)

Phone No. 08551-286441 Fax No. 08551-286441

Website: www.srfmtti.dacnet.nic.in E-mail: [email protected]

http://www.srfmtti/

mailto:[email protected]




15. SUMMARY OF OBSERVATIONS, COMMENTS &

RECOMMENDATIONS

15.1 Evaluative (mandatory)/ Non-evaluative (non-mandatory) parameters

applicable for Qualifying Minimum Performance Criteria as per Clause –

4.1 (Table-1) of IS: 13539: 2008 for acceptance of the power tiller for the

purpose of subsidies / NABARD financing are summarized as under:

Sl.

No. Characteristics

Category

(Evaluative/

Non

Evaluative)

Requirements as

per IS: 13539:

2008

Values

declared

by the

applicant/

Requirem

ents

As

observed

Whether

meets the

requireme

nts

(Yes/No)

1 2 3 4 5 6 7

15.1 Engine Performance:

a)

Max. power

under two

hours test,

(kW)

Evaluative

Declared value to

be achieved with a

tolerance of -

7.5/+15 percent of

the declared value

8.80 8.9 Yes

b) Power at rated

engine speed,

(kW)

Non –evaluative ±5 % 8.09 8.7 No

c) Specific fuel

consumption

corresponding

to max.

power, ( g/kWh )

Non –evaluative 5% 296 366 No

d) Specific fuel

consumption

corresponding

to rated

power, ( g/kWh )

Non –evaluative 5% 296 356 No

e) Max.

equivalent

crankshaft

torque (Nm)

Non –evaluative

8% 34.91 36.1 Yes




f) Max. operating temperature (deg. C) :

- Engine oil

Evaluative

The declared

value should not

exceed the max.

value specified by

the oil company

and observed

value under high

ambient condition

should not exceed

the declaration

125 118 Yes

-Coolant,

(water)

Evaluative

The declared

value should not

exceed the boiling

temperature of

coolant under

pressurized

condition or

otherwise and the

observed value

under high

ambient condition

should not exceed

the declaration.

120 116 Yes

g) Lubricating

Oil

consumption,

(g/kWh)

Evaluative

Not exceeding 1%

of SFC at max.

power under high

ambient condition

4.9 0.52 Yes

h) Maximum

coolant,

(water)

consumption,

(% of total

coolant

capacity)

Non –evaluative

The observed

value should not

exceed the

maximum value

specified by the

manufacturer

when evaluated

under high

ambient

conditions.

20 17.7 Yes




i)

Smoke level

Evaluative

Max light

absorption

coefficient of

3.25/m or

equivalent Bosch

No. 5.2 or 75

Hetridge value

(As per CMVR)

Not

Specified

Light

absorptio

n

coefficie

nt of

2.98 per

meter

Yes

j)

Overheating

tendency of

the engine

Evaluative

Satisfactory

completion of 2

hours test under

high ambient

condition.

-- Satisfac-

tory Yes

15.2 Rotary shaft performance:

a)

Max. Power

test, (kW)

Evaluative

Minimum 75

percent of obse

rved maximum

bhp for power

tiller above 5 hp

and 65 percent for

the power tiller

below 5 hp.

6.7 7.5 Yes

b) Power at rated

engine

speed,(kW)

Non –evaluative

- 10% 6.5 7.3 Yes

c) Specific fuel

consumption

corresponding

to power at

rated engine

speed,(g/kWh)

Non –evaluative

+ 10% 310 434 No

d) Max.

equivalent

rotary shaft

torque, Nm

Non –evaluative 8% 318.7 353.1 No

e) Max.

operating

temp. of

rotary

transmission

oil, (oC)

Non –evaluative

The observed

value should not

exceed the

maximum value

specified by the

manufacturer.

105 94 Yes




f) Rotary shaft

power rating,

(kW)

Non –evaluative

To be declared by

the manufacturer 6.7 7.5 Yes

15.3 Drawbar Performance :

i) Maximum

drawbar pull

corresponding

to 15% wheel

slip, (kN).

Evaluative Minimum 60 % of

static mass with

ballast

1.98 3.1 Yes

ii) Maximum

drawbar

power, (kW.)

Non -

evaluative - 10% 3.4 3.8 Yes

iii)

Maximum

transmission

oil

temperature,

(oC)

Non -

evaluative

The declared

value should not

exceed the

maximum value

specified by the

oil company and

the observed value

should not exceed

the declaration.

105 62 Yes

15.4 Brake Performance:

a) Service brakes

Evaluative

Should meet the

requirement under

CMVR

--

-- --

b) Parking

brakes:

Observation

on rotation of

cranked

wheels at the

slope of 12%

facing up and

facing down

Evaluative

No rotation of

drive wheels at a

slope of 12

percent facing up

and facing down

No

rotation of

drive

wheels

No

rotation

of drive

wheels

Yes

15.5 Air cleaner oil pull over:

Maximum

percentage of

oil pull over

(mass basis)

Evaluative 0.25 0.17 Yes




15.6 Noise level:

a) Maximum

ambient noise

emitted by the

power tiller,

dB(A)

Evaluative As per CMVR

(88 dB(A))

88 Yes

b) Maximum

noise at

operator’s ear level,

dB (A)

Evaluative As per CMVR

(98 dB(A))

98

Yes

15.7 Amplitude of mechanical vibration at (micron):

a) Steering

handle grips

Non-

evaluative 100 µ, max. 240 No

b)

Gear levers Non-


c) Clutch / brake

lever(s)

Non-


d) Rotary shaft

speed change

lever

Non-


e) Steering

clutch lever

Non-


f) Accelerator

lever

Non-


15.8 Haulage Performance:

a) Gross load of

trailer (t)

Non-

evaluative -- 1.5 1.5 Yes

b) Distance

traveled / liter

of fuel

consumption,

(km)

Non-

evaluative -- 9 to 9.5

10.34 to

10.45 No

c) Fuel consu-

mption,(cc/

km/tonne)

Non-

evaluative --

51.75 to

54.05

63.80

to

64.47 No




15.9 Wetland cultivation:

Suitability for

Wetland

Cultivation

Evaluative

Effective sealing

to be provided for

engine sump,

clutch assembly,

gear box, chain

case and rotary

shaft housing

Yes

No entry of mud and /or water was observed

Yes

15.10 Stationery operations:

Stationary

operations

Evaluative

Should have the

provision for

power outlet for

stationery

operations or

recommended

agricultural

appliances

--

Provided Yes

15.11 Discard limit (mm):

a)

Cylinder bore

diameter Evaluative

To be specified by

the manufacturer

in printed

literature

96.0 95.02 Yes

b) Piston

clearance Evaluative

To be specified by

the manufacturer

in printed

literature

0.40 0.12 Yes

c) Ring end gap:

- 1

st Comp.

Ring

Evaluative

To be specified by

the manufacturer

in printed

literature

1.5 0.50 Yes

- 2nd

Comp.

Ring Evaluative

To be specified by

the manufacturer

in printed

literature

1.5 0.55 Yes




- 3

rd Comp.

Ring Evaluative

To be specified by

the manufacturer in

printed literature

1.5 0.55 Yes

-1st Oil ring Evaluative

To be specified by

the manufacturer in

printed literature

1.5 0.60 Yes

- 2nd

Oil ring Evaluative

To be specified by

the manufacturer in

printed literature

1.5 0.65 Yes

d) Clearance of big end bearing:

-Diametrical Evaluative

To be specified by

the manufacturer in

printed literature

0.15 0.08 Yes

- Axial Evaluative

To be specified by

the manufacturer in

printed literature

0.50 0.13 Yes

e) Ring groove clearance:

- 1st Comp.

Ring

Evaluative

To be specified by

the manufacturer in

printed literature

0.30 Tapered --

- 2nd

Comp.

Ring

Evaluative

To be specified by

the manufacturer in

printed literature

0.30 0.05 Yes

- 3rd

Comp.

Ring

Evaluative

To be specified by

the manufacturer in

printed literature

0.30 0.04 Yes

-1st Oil ring Evaluative

To be specified by

the manufacturer in

printed literature

0.30 0.04 Yes

- 2nd

Oil ring Evaluative

To be specified by

the manufacturer in

printed literature

0.30 0.04 Yes

f)

Thickness of

clutch lining Evaluative

To be specified by

the manufacturer in

printed literature

3.0 6.1 Yes




g) Clearance of main bearing:

Diametrical

clearance

Evaluative

To be specified by

the manufacturer in

printed literature

0.15 0.11 Yes

Crankshaft

end float

Evaluative

To be specified by

the manufacturer in

printed literature

0.50 0.12 Yes

15.12 Safety requirements:

a) Provision of

guards on

moving parts

other than

rotavator.

Evaluative Yes Yes Provided Yes

b) Location and

direction of

exhaust

emission to be

away from the

operator and

machine for

stationary

operation.


c) Covers on hot

parts Evaluative Yes Yes Provided Yes

d) Locking of

parking stand

lever


e) Protective

shield for

rotavator to

prevent flying

of mud and

stones


f) Accidental

engaging of

reverse speed

gear when

rotary is in

operation.


g) Provision of

head lights Evaluative Yes Yes Provided Yes




15.13 CATEGORY OF BREAKDOWNS/DEFECTS:

S. No. Characteristi

cs

Category (Evaluative/

Non-evaluative)

Requirements as per IS: 13539-

2008

As

observed

Whether meets the requirements

(Yes/No)

1.

Critical

Evaluative No critical

breakdown None

Yes

2.

Major

Evaluative

Not more than two and neither of

them should be of repetitive in nature

None

Yes

3.

Minor

Evaluative

Not more than five and frequency of each should not more than two.

None

Yes

15.14 Salient Observations:

15.14.1 Engine Performance:

i) The backup torque is 9.01%.

ii) The maximum power was observed as 8.9 kW

iii)

The specific fuel consumption corresponding to max power was

recorded as 366 g/kWh against the declared value of 296g/kWh. Not

only this, even in previous sample it was observed as 261 g/kWh.

This increase in SFC is necessarily required to be arrested to

restore/improve the result compared with previous sample.

iv)

The specific fuel consumption corresponding to rated power was

recorded as 356 g/kWh against the declared value of 296g/kWh. Not

only this, even in previous sample it was observed as 270 g/kWh.

This increase in SFC is necessarily required to be arrested to

restore/improve the result compared with previous sample.

15.14.2 Rotary shaft performance:

i) The maximum rotary shaft power was measured as 7.5 kW.

ii) The specific fuel consumption corresponding to max power was

recorded as 434 g/kWh against the declared value of 310 g/kWh. This

should be looked into. Not only this, even in previous sample it was

observed as 310 g/kWh. This increase in SFC is necessarily required

to be arrested to restore/improve the result compared with previous

sample.




15.14.3 Drawbar performance test:

i)

The power tiller developed 3.8 kW Power during drawbar

performance test in H1 gear corresponding to 15% wheel slip.

15.14.4 Mechanical Vibration:

The amplitude of mechanical vibration on maximum controls /

measuring points of the power tiller exceeded the limit of 100 micron.

The mechanical vibration is directly concerned with

Human/Operator’s Health, Safety and Comfort; apart from the useful

life of the machine’s components. In view of the above, this deserves to be given top priority for corrective action.

15.14.5 Noise measurement:

Max. Noise at operator’s ear level and by stander’s position was observed as 98 dB (A) and 88 dB (A).The noise observed at

operator’s ear level is more than the limit specified by IS:12239

(Part3) – 1988. The Sound Pressure Level is directly influencing the

Human/Operator’s Health, Safety and Comfort; and therefore warrants the r corrective action.

15.14.6 Haulage test

15.14.6.1 The power tiller was recommended for haulage test with a trailer of

gross mass of 1.5 tonne .

15.14.6.2 The trailer supplied by the firm, does not meet the requirement of IS:

10806 : 2003 and therefore corrective action may be undertaken for

compliance.

15.14.6.3 Distance traveled per litre was observed 10.34 to 1.45 km.

15.14.6.4 Specific fuel consumption was observed 63.80 to 64.47 cc/km/ton

15.14.7 Rotavator blades:

The dimensions of the blades do not conform, in full, to IS: 6690-

1981. The blade, being the key component of the tilling operation, is

required to be BIS compliant. Necessary action may be taken for this.

15.14.8.1

As per IS: 12239 (Part 3) – 1988, balancing mass to be added to

achieve correct weight balance of the power tiller with various

attachments should be recommended by the manufacturer in the

operator manual. This may be examined for compliance.

15.14.8.2

Provision of spark arresting device may be considered for

incorporation in the exhaust system.




15.14.8.3 Applicant has not provided any hitch with the machine it is therefore

recommended that a suitable hitch as IS:10747-1983 may be

provided. On this observation, applicant has submitted that the

bracket supplied for trailer is suitable for attaching the implements

also. Not with standing, the said hitch does not conform to the

requirements of IS: 10743-1983.

15.14.8.4

Labeling plate:- Even though a labeling plate is riveted on Engine,

but it does not reveal all the required information. It is therefore

recommended that a suitable labeling plate covering all essential

components, inter alia, the following may be provided in a temper

proof plate:-

I. Year of manufacturer

II. Max. Power (kW)

III. Specific Fuel consumption (g/kWh)

15.14.8.5

It is recommended that the tyre should have the “Marking” as per

clause 8 of IS: 13154-1991.

15.14.8.6

The handle grip does not meet the requirement of IS: 11858 – 1986.

This may be looked into for compliance.

15.15 Adequacy of literature supplied with the machine:

The following literature was supplied with the test sample for

reference during the test.

Service Log Book, Operator's Manual and Part’s list of Power Tiller.

Operator Manual and Part’s list of Engine. However, it is recommended that the Operator Manual may be

brought out in accordance with IS: 8132-1999 with inclusion of, inter

alia, the following: -

- Recommended matching implements.

- Fuel saving tips.

- Safe operating speed with trailer.




16. COMPARISON WITH SPECIFICATION AND PERFORMANCE

CHARACTERISTICS OF PREVIOUS SAMPLE (Test Report No. PT-

43/736, June, 1997 of CFMTTI, Budni) and PRESENT SAMPLE

SI No. Parameter Previous Sample Present Sample

1 2 3 4

16.1 Specification:

16.1.1 Power tiller:

Make : VST Shakti VST Shakti

Model : VST 130DI VST Shakti 130DI

16.1.2 Engine:


Model : VST 130DI VST 130DI

Bore/stroke, (mm) : 95/95 95/95

Specified cubic capacity, (cc) : 673.4 673.4

Rated engine speed, (rpm) : 2400 2400

16.1.3 Fuel system:

Make & model of fuel filters : MICO,

9450030101

BOSCH,

Not Specified

Make & model of fuel

injection pump

: MICO, PFR IK

80A 476

BOSCH, India

F 002 F20 044

Make & model of fuel

injectors

: CAV, HM3 BOSCH,

F 002 C70 561 208

Manufacturer’s production settings, (kgf/sq. cm)

: 220 ± 5 250 + 8

Injection timing : 20o BTDC 12

o BTDC

Make & model of governor : Not Specified,

Mechanical

Centrifugal

Not Specified,

Mechanical

Centrifugal

16.1.4 Cooling system:

Total coolant capacity, (l) : 3.4 3.4

16.1.5 Lubrication system:

Oil sump capacity, (l) : 2.4 2.4




1 2 3 4

16.1.6 Transmission:

16.1.6.1 Clutch:

Type of clutch plate : Dry, Multi disc cone Dry, Friction,

Multi Plate

Size, (mm) : 133.4 145.1

16.1.6.2 Gear box:

No. of speeds: :

-Forward : 06 06

-Reverse : 02 02

Range of speeds, (kmph):

-Forward : 1.52 to 12.42 1.52 to 12.61

-Reverse : 1.42 to 4.79 1.31 to 4.74

16.1.7 Parking brake:


Type : Independent drive

clutch (Dog clutch)

Internal drive

out clutch

Area of liner, (sq. cm) : 23.06 22.71

16.1.8 Wheel equipments:

Size of tyres : 6.00 - 12, 4 PR 6.00 x 12 (4 PR)

Standard track width, (mm) : 700 (Std.), 600 710 (std), 600

Wheel base, (mm) : Not Specified 1250

16.1.9 Overall dimensions, (mm):

-Length : 2326 2370

-Width : 893 880

-Height : 1079 1260

-Ground clearance : 190 185

16.1.10 Mass, (kg):

-With rotary tiller : 415 402

-Without rotary tiller : 345 336

16.2 Performance

characteristics:

16.2.1 Engine performance:

-Maximum power, (kW) : 9.0 8.9




1 2 3 4

-Specific fuel consumption

corresponding to maximum

power, (g/kWh)

: 261 366

-Maximum equivalent

crankshaft torque, (Nm)

: 36.5 36.1

-Back-up torque, (%) : Not Specified 9.01

Maximum temperature,

(Deg.):

:

-Engine oil : 113 118

-Coolant (water) : 100 116

-Exhaust gas : 648 622

-Air intake : 53 46

Lube oil consumption,

(g/kWh)

: 4.9 0.52

16.2.2 Rotary shaft performance:

-Maximum power, (kW) : 7.2 7.5

-Specific fuel consumption

corresponding to maximum

power at rated engine speed,

(g/kWh)

: 310 434

-Maximum rotary shaft

torque, (Nm)

: 318.72 353.1

Maximum operating

temperature of rotary

transmission oil, (˚ C)

: 95 94

16.2.3 Drawbar performance:

Maximum drawbar power,

(kW)

: 3.4 3.8

Maximum drawbar pull,

(KN)

: 3.1 3.1

Maximum transmission oil

temperature, (˚ C) : 60 62

16.2.4 Parking brake:

Maximum breaking device

control force, (N)

: 196 276

Efficacy of parking brake : Effective Effective




1 2 3 4

16.2.5 Noise measurement:

Maximum noise at by-

standard’s position, dB(A) : 82 88

Maximum noise at operator’s ear level, dB(A)

: 98 98

16.2.6 Air cleaner oil-pull-over

test:

Maximum oil pull over, (%) : 3.16 0.17

16.2.7 Mechanical vibration:

Maximum amplitude of

vibration at, (micron):

-Gear lever : 400 145

-Steering handle grip : 500 240

-Rotary shaft speed change

lever

: 200 190

-Steering clutch lever : 550 300

-Accelerator lever : 500 450

16.2.8 Haulage test:

-Gross mass of trailer,

(tones)

: 2.0 1.5

-Av. travelled speed, (kmph) : 11.93 to 12.63 13.16 to 13.37

-Distance travelled per liter

of fuel consumption, (km)

: 9.25 to 9.66 10.34 to 10.45

-Av. fuel consumption,

(cc/km/tonne)

: 51.75 to 54.05 63.80 to 64.47

16.3 Maintenance/service

problems:

ENGINE:

i) Governor hunting

was observed in the

vicinity of maximum

power - 39.42

ii)Water was

observed coming out

from exhaust

silencer-102.11

iii)Radiator was

found leak - 115.44 &

125.64

iv) Fan belt broke

None of those

problems

mentioned in

col.3, was

observed in the

present sample.




- 137.77 & 281.84

v) The oil pressure

pipe leaked - 212.54

vi) Injector nozzle

holes were found

choked - 213.12

vii) During ploughing

& Cultivation, the air

cleaner oil was being

sucked by engine to

the extent leaving no

oil in air cleaner bowl

- 239.98

viii) Oil along with

fumes was coming

out from engine

breather - 281.84

TRANSMISSION:

ix)Leakage of oil was

observed from gear

shifting lever gasket

& rotary shaft cover -

COMPONENTS &

ASSEMBLY

INSPECTION

x)The ring end gap of

all the piston rings

has been 2 to 3 times

more than discard

limit - 281.84

xi) The ring groove

clearance of one

compression ring was

against the discard

limit - 281.84

xii) The diametrical

clearance of big end

bearing has exceeded

the discard limit

-281.84




1 2 3 4

16.4 Adequacy of literature: Service log book for

VST Shakti 130DI

Power Tiller,

Operator's manual &

parts list for VST

Shakti Diesel engines

(VWH 120 & 130DI

engine),

Parts catalogue for

transmission and

chassis of Mitsubishi

Shakti Power Tiller

and Service manual

for Mitsubishi Shakti

diesel engine VWH

models

Service Log book,

Operator’s manual and parts

list of power tiller

in English and

operator manual

and parts list of

engine in English

17. APPLICANT’S COMMENTS

Para

No.

Our

reference Applicant’s Comments

17.1 15.14.1 (iii) The specific fuel consumption being high will be looked

into engine optimization will be carried out to bring the

values within the declared values.

17.2 15.14.1 (iv) The specific fuel consumption being high will be looked



17.3 15.14.2 (ii) The specific fuel consumption being high will be looked



17.4 15.14.4 The amplitude of mechanical vibration exceeding the

limit will be looked into and if necessary adequate

dampening methodologies will be designed and

implemented accordingly in the tiller.

17.5 15.14.5 The noise level observed at operators ear level will be

analyzed and reduction possibilities will be studies and

implemented.

17.6 15.14.6.2 Necessary guidelines will be communicated to the trailer

manufacturer to comply with the IS std.

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