Inventor
AMPFERER HERBERT
DE30 patents
Patents
30 patentsUS5678884AOct 21, 1997
Air guide device with air intake openings
PORSCHE AG37 citations92
US5273007ADec 28, 1993
Arrangement for distributing oil in a camshaft
PORSCHE AG23 citations92
US5136993AAug 11, 1992
Internal-combustion engine oil guiding housing
PORSCHE AG38 citations92
US5080057AJan 14, 1992
Cylinder head of an internal-combustion engine
PORSCHE AG34 citations92
US5063895ANov 12, 1991
Oil pump drive arrangement for a piston internal-combustion engine and method of making same
PORSCHE AG43 citations92
US5014655AMay 14, 1991
Camshaft drive of a multi-cylinder V-engine
PORSCHE AG26 citations92
US4693216ASep 15, 1987
Crankshaft bearings for internal-combustion engines
PORSCHE AG38 citations92
US4493295AJan 15, 1985
Internal combustion engine, especially for motor vehicles
PORSCHE AG31 citations92
US5138985AAug 18, 1992
Arrangement for changing the valve timing of an internal-combustion engine
PORSCHE AG38 citations90
US4938314AJul 3, 1990
Plastic oil pan
PORSCHE AG44 citations89
US4898125AFeb 6, 1990
Cylinder head cover with suction pipe arrangement for an internal combustion engine
PORSCHE AG21 citations82
US4883031ANov 28, 1989
Internal combustion engine
PORSCHE AG22 citations82
US4823748AApr 25, 1989
Actuating arrangement
PORSCHE AG21 citations82
US4805566AFeb 21, 1989
Arrangement for influencing the control times of valves
PORSCHE AG21 citations82
US4759317AJul 26, 1988
Multi-cylinder internal combustion engine
PORSCHE AG20 citations82
US4709670ADec 1, 1987
Fastening arrangement of a cover hood at a cylinder head
PORSCHE AG22 citations82
US4657043AApr 14, 1987
Oil pressure regulating valve
PORSCHE AG22 citations82
US4974569ADec 4, 1990
Cylinder block and crankcase
PORSCHE AG20 citations76
US5094072AMar 10, 1992
Exhaust system of a reciprocating piston engine
PORSCHE AG14 citations74
US4829942AMay 16, 1989
Intake system for a multi-cylinder internal-combustion engine
PORSCHE AG11 citations74
US4828536AMay 9, 1989
Chain tensioner
PORSCHE AG9 citations74
US4559783ADec 24, 1985
Turbocharged internal combustion engine with adjustable length pipe sections
PORSCHE AG17 citations74
US4510898AApr 16, 1985
Reciprocating piston internal combustion engine, preferably of four-cylinder construction
PORSCHE AG14 citations74
US4903644AFeb 27, 1990
Air intake section of an internal combustion engine
PORSCHE AG13 citations73
US5220889AJun 22, 1993
Intake system for a multi-cylinder internal-combustion engine
PORSCHE AG12 citations72
US4785772ANov 22, 1988
Crankshaft of a ferro-metallic material for reciprocating piston internal combustion engines
PORSCHE AG11 citations72
US5711614AJan 27, 1998
Crankshaft bearing of a multicylinder internal combustion engine
PORSCHE AG16 citations68
US5161643ANov 10, 1992
Delay part for lubricating oil
PORSCHE AG6 citations63
US4716638AJan 5, 1988
Method for aligning bearing covers at bearing sections of a crankcase
PORSCHE AG6 citations63
US5148719ASep 22, 1992
Torsional-vibration damper
PORSCHE AG5 citations58