English Electric diesel engines

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English Electric diesel engines were manufactured by the English Electric company of the United Kingdom for both stationary and rail transport use. The range was derived from the "K type" engine (10" bore x 12" stroke), developed in the 1930s. These diesel engines were marketed under the English Electric name into the 1960s and, later, under the name Ruston-Paxman.


The "K" type engine had 2-valve cylinder heads and ran at 600-680 rpm. The Mark I "RK" and "V" types had 2-valve cylinder heads. The Mark II "RK" and "V" types had 4-valve cylinder heads. They ran at 750-900 rpm, and were available with turbochargers and intercoolers.

  • Number of cylinders:
    • K and RK types, 4, 6, 7[citation needed] and 8 in line
    • V type, V8, V12 or V16
  • Cylinder bore: 10" (254mm)
  • Piston stroke: 12" (305mm)
  • Displacement: 942 cu. in (15.445 litres) per cylinder
  • Power range: 60-275 bhp per cylinder
  • Rotational speed: 630-900 rpm
  • Cooling: water
  • Designations (example, 12CSVT):
    • 12 = number of cylinders
    • C = intercooler
    • S = turbocharger (supercharger)
    • V = V engine
    • T = traction, M was used for Marine use


A large number of these engines were built and these are just a few examples:


File:Cutaway English Electric 12SVT.jpg
Cutaway 12SVT in a Queensland Railways 1250 class at the Workshops Rail Museum

All cylinder numbers were used in Australia.

NSW was the only state not to have EE powered locos, Vic only had a few (F class).



New Zealand[edit]




  • 6KT Litt V1 Nr 3 & 4 350 hp

United Kingdom[edit]


  1. Clough, David N. (2011). "2: Diesel-Electric Development after 1945". Hydraulic vs Electric: The battle for the BR diesel fleet. Ian Allan. p. 14. ISBN 978-0-7110-3550-8. 
  2. Clough 2011, p. 20