Patent ID: 9291109
Filing Date: 2016-03-22
CPC Classification: F02D,F02M,Y02T

Claim Text:
1. A fuel supply system for injecting liquefied vapour under high pressure into a combustion chamber of an combustion engine, comprising a fuel supply for liquefied vapour, a first low-pressure connected to a second high-pressure pump via a conduit, wherein the second high-pressure pump comprises a high-pressure chamber which is embodied to thereby increase the pressure of the liquefied vapour, and wherein a high-pressure discharge of the second high-pressure pump is connected to a high-pressure rail which comprises one or several injectors for injecting liquefied vapour into a combustion chamber, wherein the fuel supply system is provided with a discharge unit for discharging vaporous fuel between the high-pressure chamber and the combustion chamber, wherein the fuel supply system is configured to discharge vaporous fuel from the discharge unit, wherein the second high-pressure pump has a first internal discharge connected to a low-pressure part of the second high-pressure pump and a second discharge downstream of the second high-pressure pump ,and wherein a short-circuit line comprising a controllable valve and a pump connects the first internal discharge and second discharge of the second high-pressure pump with the inlet of the second high-pressure pump.