Pre-chamber jet ignition, an alternative to traditional spark ignition, has been used in large-bore natural gas engines and F-1 racing cars. It has demonstrated the potential for enabling stable ultra-lean combustion, reduction in cycle-to-cycle variation, and extension of the lean see more
Syngas produced from coal and biomass gasification can produce liquid fuels for aviation through fuel synthesis using processes such as the Fischer-Tropsch Process. As alternative fuels are emerging in the market, it is important to understant their physical, chemical and combustion
see morePropulsion Technology for UAVs
Propulsion technologies for drones and small unmanned aerial vehicles (UAVs) are evolving rapidly, offering a wide range of opportunities to enhance performance, endurance, and environmental sustainability. Fully electric propulsion, powered by lithium-based batteries, is currently the most common approach due to its simplicity, low noise, and minimal emissions. These systems are well-suited for short-range missions and consumer drones. Fuel cells, particularly hydrogen fuel cells, are gaining traction for their higher energy density and longer flight durations compared to batteries. They provide a cleaner alternative to internal combustion (IC) engines and offer the potential for extended missions in surveillance, mapping, and delivery services. Meanwhile, traditional IC engines remain valuable in scenarios requiring high power-to-weight ratios, quick refueling, and rugged operational environments。 see more..
Nanofluid fuels, an exciting new class of nanotechnology-based fuels, are liquid fuels with a stable suspension of nanometer-sized particles. Depending on the physical and chemical properties of the added nanomaterials, nanofluid fuels can achieve better performance
see moreCombustion-based small-scale energy devices have applications in many fields, e.g., portable power devices, sensors, actuators, unmanned aerial microvehicles, microthrusters, and micro-heating devices. In particular, see more
Practical engines such as liquid rockets and diesel engines operate at high pressures. As a result, the injected fuel may be at transcritical or supercritical state during the injection, mixing and vaporization processes. Previous studies have provided important insights on supercritical see more