Dual valve lift blip with single cam lobe for gasoline engines
Dual valve lifter assembly
Dual-acting apparatus for variable valve timing and the like
Dual-equal cam phasing with variable overlap
Dual-pressure hydraulic valve-actuation system
Ductile iron roller tappet body and method for making same
Durable valve lifter for combustion engines and methods of...
Dynamic camshaft apparatus
Dynamic valve mechanism of internal combustion engine
Dynamic valve timing adjustment mechanism for internal...