Prosper L'Orange
Prosper L'Orange ( born 1 February 1876 , Beirut; died 30 July 1939 , Stuttgart ) was a German engineer and inventor who pioneered the precombustion chamber ( or prechamber ) , which made possible high-speed diesel engines that did not require an air compressor , and enabled them to be built small enough for use in road vehicles . 
<triplet> Prosper L'Orange <subj> 1 February 1876 <obj> date of birth <subj> Beirut <obj> place of birth <subj> Stuttgart <obj> place of death <triplet> Stuttgart <subj> German <obj> country <triplet> inventor <subj> engineer <obj> subclass of