motor-assisted
overengined
aircraft engine
enginemanship
draught engine
outstroke
pushrod
locomotive
jato
overtorque
reaction engine
automobile engine
reaction-propulsion engine
afterburner
jetter
rocket
piston rod
projectile
rocket sled
thrust
fuel system
whimsey man
reciprocating engine
recoil start
second
mill
third gear
first
fire
camshaft
specific thrust
brake horsepower
two-stroke
combustion engine
four-stroke
overdrive
choker
Orion drive
turborocket
power plant
overpropulsion
overhead valve
ticking-over
twincam
electric vehicle
fifth
turboshaft
fourth
bottom-end
traction
hybrid rocket
motored
donk
onager
smoker
fanjet
booster
tormentum
tribrid vehicle
multiengine
overspeed
hopped-up
propulsive
starter
throttle
motor cruiser
overhead cam
thumper
starting motor
high
wet
ballista
steam engine
firewall
starter motor
valve train
souped-up
high gear
opposed piston opposed cylinder
motorial
baffle
motorized
ullage motor
motorised
propfan
ISP
retrorocket
unducted fan
interrupter gear
tune-up
straight-eight
fifth gear