A System to Enable Mixing Controlled Combustion With High Octane Fuels Using a Prechamber and High-Pressure Direct Injector

The demand for transportation energy is growing and thus improving the efficiency reducing pollutant emissions from this sector critical. Transportation has historically been powered by internal combustion engine (ICE). Many alternative technologies are being evaluated to replace ICE, such as hydrogen fuel cells battery electrics. These appear attractive at vehicle-level but have many challenges regarding life cycle lack of infrastructure. A more pragmatic approach would be use current liquid fuels infrastructure with cleaner burning, renewable that potential carbon neutral, low alcohols (e.g., methanol, ethanol, propanol, butanol). tend a high-octane number, making them great candidates conventional spark ignition (SI) engines. However, SI engines plagued several when it comes high load operation, pre-ignition, knock-limited peak torque, poor snap torque response, levels cyclic variability, sensitivity varying properties. objective research develop technology will allow octane utilized in utilize robust mixing controlled combustion. proposed system which utilizes an active prechamber shape annulus high-pressure direct injector. injector same fuel, could any relatively volatility resistance autoignition (i.e., number). fired late compression stroke hot jet flames ejected prechamber. jets ignite injected sprays near top dead center, establishing event. This operation across full operating space clean burning fuels, without shortcomings part efficiency.