Fuel injection system for clean low viscosity fuels

摘要

An internal combustion engine that is driven by fuels such as dimethyl ether (DME) that have a viscosity less than 1.0 and a storage and delivery system for the fuel that will reduce considerably the emissions of NOx and particulate. The fuel delivery system includes a fuel injector nozzle valve being forced closed by fuel, that has leaked past a solenoid operated valve and is at a pressure less than the valve opening pressure.