GB453717A - Improvements in the heating of vehicles driven by internal combustion engines - Google Patents

Abstract

453,717. Heating vehicles. ARMSTRONG, WHITWORTH, & CO. (ENGINEERS), Ltd., SiR W. G., BECKETT, C. M., and ORTON, A., Scotswood Works, Newcastle-on- Tyne. May 15, 1935, No. 14210. [Class 64 (ii)] An internal-combustion engine 1, driving a vehicle, is connected to the usual cooling radiator 2 through a pipe 7 and thermostatic valve 17, which prevents circulation until the temperature in a tank 5 connected to the radiator outlet 8 reaches a predetermined value. A further thermostatic valve 18 prevents circulation from the engine jacket outlet pipe 4 until the temperature reaches a predetermined value. The water is supplied to heating radiators 9 through tank 5 and overflow pipe 10, the return pipe 11 delivering the water above water level in the tank 5. In order to maintain the level in the tank 5 in the event of leakage, a make-up tank 12 is connected by pipe 13 to the overflow pipe 10 from tank 5. The level in the tank 12 cannot be higher than in tank 5, but may be lower without affecting the level in tank 12. A pump 14 may be provided in the cooling system, and a pump 15 in the heating system. A baffle 16 ensures the return of the cooled liquid to the bottom of tank 5. In use, the valve 18 remains closed until the medium in the engine jackets rises to a, predetermined temperature, and then allows the medium to pass to tank 5, and thence through overflow pipe 10 to the heaters 9. The cooled medium returns through pipe 11 to the tank 5 and when the temperature in the latter reaches a predetermined point, the valve 17 opens and allows the medium to pass through the engine cooling radiator 2. In a modification, Fig. 2 (not shown), the tank 5 is closed, and steam from its upper part passes to the radiator 2 where it is condensed, and the condensate returns direct to the bottom of the tank 5.