Rolls-Royce Archives
         « Prev  Box Series  Next »        

From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Merits of exhaust heated throttles over water heated ones, especially in winter conditions with poor fuel.

Identifier  ExFiles\Box 38\4\  Scan072
Date  8th August 1924
  
To CJ. from R.{Sir Henry Royce}
c. to BJ. PN.{Mr Northey} HS.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer}

H3436

R3/M18.8.24.

RE. EXHAUST HEATED THROTTLES. X.2768
X.3436
X.4390

We are gradually making this system universal on our cars.

PN.{Mr Northey} doubts if it is an advantage over water heated throttles. Probably there is little or no advantage with good fuel in summer weather, but Hs.{Lord Ernest Hives - Chair}, myself, and others, have definitely thought the extra heating a decided advantage in winter, and with poor fuels.

We will ask Hs.{Lord Ernest Hives - Chair} to repeat his comparative experiments either with low temperature, or with a percentage of paraffin mixed with the petrol.

We do not believe that the temperature even with the exhaust heat is sufficiently high under very cold conditions in Central Europe, even with the standard grade of petrol. No doubt Hs.{Lord Ernest Hives - Chair} will be able to make comparative tests which will clearly shew whether or not this is advantageous.

R.{Sir Henry Royce}
  
  


Copyright Sustain 2025, All Rights Reserved.    whatever is rightly done, however humble, is noble
An unhandled error has occurred. Reload 🗙