公开(公告)号：DE10256447A1

公开(公告)日：2003-06-26

申请号：DE10256447

申请日：2002-12-03

Applicant: GEN MOTORS CORP

Inventor： PATEL VIMESH M ,  ALBERTSON WILLIAM CONRAD

IPC: F01L9/02 ,  F01L13/00 ,  F01L1/14 ,  F02D13/06

Abstract: An internal combustion engine includes hydraulically-controlled cylinder deactivation and has an engine block with a plurality of cylinders formed therein. At least one-half of the cylinders are deactivatable by collapsible lifters. An individual hydraulic circuit module is positioned adjacent each deactivatable cylinder. Each hydraulic circuit module includes a valve and is configured to receive a supply of oil from the engine block and to selectively provide pressurized oil to the respective collapsible lifters for cylinder deactivation. A solid cover plate is positioned adjacent each cylinder which is not deactivatable.

公开(公告)号：DE10256447B4

公开(公告)日：2007-02-08

申请号：DE10256447

申请日：2002-12-03

Applicant: GEN MOTORS CORP

Inventor： PATEL VIMESH M ,  ALBERTSON WILLIAM CONRAD

IPC: F01L1/14 ,  F01L9/02 ,  F01L13/00 ,  F02D13/06

Abstract: An internal combustion engine includes hydraulically-controlled cylinder deactivation and has an engine block with a plurality of cylinders formed therein. At least one-half of the cylinders are deactivatable by collapsible lifters. An individual hydraulic circuit module is positioned adjacent each deactivatable cylinder. Each hydraulic circuit module includes a valve and is configured to receive a supply of oil from the engine block and to selectively provide pressurized oil to the respective collapsible lifters for cylinder deactivation. A solid cover plate is positioned adjacent each cylinder which is not deactivatable.

公开(公告)号：DE10324405A1

公开(公告)日：2003-12-24

申请号：DE10324405

申请日：2003-05-28

Applicant: GEN MOTORS CORP

Inventor： ALBERTSON WILLIAM CONRAD ,  ROZARIO FREDERICK J ,  PATEL VIMESH M ,  PONCE CARLOS A

IPC: F01L1/14 ,  F01L1/24 ,  F01L1/255 ,  F01L13/00 ,  F02D17/02

Abstract: Deactivation apparatus for selected cylinders of an engine include switching hydraulic lash adjusters or valve lifters forming part of a valve train for actuating engine valves of the selected cylinders and operable to actuate or release their respective valves in response to an oil pressure signal. A gallery carrying the lash adjusters includes oil passages fed by an engine pressure oil supply through a control valve to supply oil to switching portions of the lash adjusters. The control valve is operative to close or open communication of the oil supply with the lash adjusters and to relieve oil pressure in the passages when communication with the pressure oil supply is closed. Various bypass alternatives between the pressure oil supply and the oil passages carry oil to portions of the oil passages to purge air from the passages when the three-way valve exhaust port is open.