TRW DM-LAE Dual Mode Liquid Apogee Engine
The DM-LAE is a propulsion system with a hydrazine/N2O4 engine for apogee burn and lower thrust monopropellant thrusters for attitude control.
It's not entirely clear whether one or two 454N engines were flown on each of the AS5000 satellites using the DM-LAE, but my best guess is that there were two.