F01L1/25 - CPC Classification Index

ClassID:

137189 ⎘

F01L1/25 - CPC Classification

Classification description:

Valve-gear or valve arrangements, e.g. lift-valve gear; Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically; Hydraulic tappets between cam and valve stem

Sub-classes:

F01L1/252 » {for side-valve engines} 2

Recent Application in this class:

20250020072

2025-01-16

Multi-cylinder internal combustion engine, with cylinders equipped with intake valve variable actuation systems having hydraulic circuits which cross each other

20220243621

2022-08-04

Internal combustion engine with fast combustion and method of control of such an engine

20200208547

2020-07-02

Switching tappet or a roller finger follower for compression release braking

20190003446

2019-01-03

Determining sliding camshaft actuator pin position based on engine crankshaft angle

20180363513

2018-12-20

Engine valve lifter having anti-rotation plug

20170342869

2017-11-30

Variable valve mechanism for internal combustion engine

20170284237

2017-10-05

Rocker arm with hydraulic lash adjustment

20170101903

2017-04-13

System and method for variable actuation of a valve of an internal-combustion engine, with a device for dampening pressure oscillations

20170051639

2017-02-23

Valve bridge assembly

#10

20170051638

2017-02-23

Valve train assembly

#11

20160341080

2016-11-24

Actuator for an electrohydraulic gas-exchange valve train of a combustion engine

#12

20160319708

2016-11-03

Engine valve lifter oil flow control and anti-rotation feature

#13

20150369087

2015-12-24

Centrifugal process to eliminate air in high pressure chamber of hydraulic lash adjuster

#14

20150159520

2015-06-11

Valve bridge

#15

20130319364

2013-12-05

Tappet for a valve train or a pump drive and method of making a tappet

#16

20130186359

2013-07-25

Deactivating hydraulic valve lash adjuster/compensator with temporary lash compensation deactivation

#17

20130133596

2013-05-30

Internal-combustion engine having a system for variable actuation of the intake valves, provided with three-way solenoid valves

#18

20120042840

2012-02-23

Electro-hydraulic variable valve lift apparatus

#19

20110239987

2011-10-06

Internal combustion engine including valve deactivation mechanism

#20

20110048347

2011-03-03

Combustion chamber deactivation system

#21

20110000452

2011-01-06

Lash adjuster

#22

20090277406

2009-11-12

Power unit for vehicle

#23

20090217896

2009-09-03

Valve drive for an internal combustion engine

#24

20090126661

2009-05-21

Variable valve lift apparatus

#25

20090056659

2009-03-05

DIRECT-ACTING TYPE VALVE LIFTER FOR INTERNAL-COMBUSTION ENGINES

#26

20080072862

2008-03-27

Combustion chamber deactivation system

#27

20080072857

2008-03-27

Hydraulic valve clearance compensation element

#28

20070245988

2007-10-25

Variable-valve-actuation apparatus for internal combustion engine

#29

20070240653

2007-10-18

System and method for adaptive control of variable valve lift tappet switching

#30

20070215106

2007-09-20

System and method for controlling auto-ignition

#31

20070157901

2007-07-12

System and method for controlling auto-ignition

#32

20070125334

2007-06-07

Roller Type hydrocushion mechanical tappet

#33

20070113808

2007-05-24

INTERNAL COMBUSTION ENGINE COMPRISING A VARIABLE VALVE LIFT SYSTEM AND A METHOD FOR CONTROLLING VALVE LIFT SHIFTING

#34

20070113807

2007-05-24

INTERNAL COMBUSTION ENGINE COMPRISING A VARIABLE VALVE LIFT SYSTEM AND A VARIABLE VALVE TIMING SYSTEM, AND A METHOD FOR SUCH AN ENGINE

#35

20060201461

2006-09-14

Variable-valve-actuation apparatus for internal combustion engine

#36

20060118074

2006-06-08

Variable cam follower for an internal combustion engine

#37

20060107917

2006-05-25

Cup tappet for an internal combustion engine

#38

20060054120

2006-03-16

Internal combustion engine having valves with variable actuation each provided with a hydraulic tappet at the outside of the associated actuating unit