b-2 Temperature Measuring Sheet for Small SI Engines
Unit model / serial no. : Product Name : checked place at :
Engine model : Engine serial no. : Loading condition :
measuring
* measuring started time :
* measuring stopped time :
before
E/G
start
standard
value of
evaluation
remarks
1. Atmosphere AT
2. Engine room RT <75/167
3. Exhaust gas
(together) EXT
4. Engine oil <110/230 (at Continuous)
LOT <120/248 (at Overload)
䂦
T
5. Air intake IAT <45/113
䂦
T <5/9 (IAT)-(AT)
6. Cooling air inlet
CAIT <40/104
7. Cooling air outlet CAOT
䂦
T <30/54 (CAOT)-(CAIT)
8. Cooling water inlet
R **radiator cap
CWIT <110/230 = 0.9 kgf/cm
2
9. Cooling water outlet
R
CWOT
10. Air To Boil
***ATB=(x)-(CWIT)+(AT) ATB >55/131 (at Max.load)
11. Overflow volume of
cooling water OFQ
12. Fuel FOT <60/140
䂦
T <20/68
13.
Carburetor chamber surface
䂦
T <20/68 (FOT)-(AT)
14. Battery surface BRT <55/131 (CCT)-(AT)
15. surface of starter, STT
alternator, regulator, ALT <80/176
etc. RET
16. Surface of ignitor, IGcoil SIT <80/176
17. Engine rotation Low Idling
min
-1
(rpm) N High Idling
note : 1) Operating conditions : Cooling water / LLC 50%, Thermostat / jacked open.
2) The above judgment (evaluation) standards is to be applied in the max. ambient condition of 40°C (104°F), in case
䇭 that the ambient temperature is over 40°C (104°F), it must be judged adding the balance between the actual
䇭 temperature and 40°C (104°F) to the judgment standard.
3) Do not run a cooling test if the ambient temperature is below 24°C (75°F) because the large change in air density
䇭 and radiation from non cooling system parts give false results.
***Air To Boil (ATB) value must be calculated by using below max. temperature :
LLC 50% with 88.3 kPa (0.9 kgf/cm
2
or 12.8 psi) pressure cap : (x) = 110°C (230°F)
special note :
1) The judgment standard > 49°C (120°F) in the above formula { ***ATB = (x) - (CWIT) + (AT) } is KUBOTA's standard.
It may change depending on applications, countries, locations, etc.,
therefor, it is better to judge under the discussion with OEM's referring their own experienced values.
Agreement :
______________________________________________________________________________________________________
______________________________________________________________________________________________________
* If there are specification or structural changes at Customer's product, application must be rechecked and reported.
confirmed
Customer :_____________________ Distributor :_____________________ KUBOTA :_____________________
䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭䇭㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷㩷reported by :_____________________
1st
䋺㩷
䋺
2nd
䋺㩷
䋺
3rd
䋺㩷
䋺
4th
䋺㩷
䋺
5th
䋺㩷
䋺
6th
䋺㩷
䋺
7th
䋺㩷
䋺
8th
䋺㩷
䋺
(unit = degrees . )
11/jan/01
4
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