Editing Diesel engine (section)

====1950s====
[[File:ZT 303 Motor.jpg|thumb|Piston of an MAN [[M-System]] centre sphere combustion chamber type diesel engine ([[4 VD 14,5/12-1 SRW]])]]
* 1950s: [[Klöckner-Humboldt-Deutz|KHD]] becomes the air-cooled diesel engine global market leader.<ref name="Tschöke_2018_666" />
* 1951: J. Siegfried Meurer obtains a patent on the ''[[M-System]]'', a design that incorporates a central sphere combustion chamber in the piston (DBP 865683).<ref name="MAN_465" />
* 1953: First mass-produced [[Indirect injection#Swirl chamber|swirl chamber injected]] passenger car diesel engine (Borgward/Fiat).<ref name="Tschöke_2018_10" />
* 1954: Daimler-Benz introduces the [[Mercedes-Benz OM 312|Mercedes-Benz OM 312 A]], a 4.6 litre straight-6 series-production industrial diesel engine with a turbocharger, rated {{convert|115|PS|kW|abbr=on}}. It proves to be unreliable.<ref name="Daimler_2009_2" />
* 1954: [[Volvo]] produces a small batch series of 200 units of a turbocharged version of the TD 96 engine. This 9.6 litre engine is rated {{convert|136|kW|PS|abbr=on}}.<ref name="vFersen_1987_156" />
* 1955: Turbocharging for MAN two-stroke marine diesel engines becomes standard.<ref name="Mau_1984_17" />
* 1959: The [[Peugeot 403]] becomes the first mass-produced passenger sedan/saloon manufactured outside [[West Germany]] to be offered with a diesel engine option.<ref name="Peugeot403gazole">{{Cite web |last=Andrew Roberts |date=10 July 2007 |title=Peugeot 403 |url=https://www.independent.co.uk/life-style/motoring/features/peugeot-403-5529921.html |access-date=28 February 2019 |website=The 403, launched half a century ago, established Peugeot as a global brand. |publisher=[[The Independent]], [[London]]}}</ref>