(19)
(11) EP 2 037 110 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.01.2010 Bulletin 2010/03

(43) Date of publication A2:
18.03.2009 Bulletin 2009/12

(21) Application number: 08160709.5

(22) Date of filing: 18.07.2008
(51) International Patent Classification (IPC): 
F02D 41/22(2006.01)
F01P 11/18(2006.01)
 F02F 7/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 14.09.2007 IN Mu17732007

(71) Applicant: Tata Motors Limited
400 001 Mumbai (IN)

(72) Inventor:
  • Sathiyasivan, Narayanan Annamalai
    411018 Maharashtra (IN)

(74) Representative: De Gregori, Antonella et al
Ing. Barzano' & Zanardo Milano S.p.A. Via Borgonuovo 10
20121 Milano
20121 Milano (IT)

   


(54) Engine protection system


(57) This invention relates to Engine protection system which comprises at least one float sensor, auxiliary coolant tank, a relay, Fuel Injection Pump (FIP) solenoid switch and coolant level warning indicator wherein said float sensor is provided on an auxiliary coolant tank to sense the level of coolant inside the said tank. Said auxiliary coolant tank is provided to maintain sufficient coolant level inside the radiator. When coolant level inside the said auxiliary coolant tank drops beyond the specified safe limit then float unit of said float sensor moves down and completes the electrical circuit, because of which the FIP solenoid switch will cut off the diesel supply to the engine. After this even though the engine gets cranked but it will not start unless the level of coolant in a said tank resumes to the normal level. According to another embodiment the said FIP solenoid switch of diesel engine is replaced with electronic control unit for petrol engine.







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