System and method for controlling valve timing of an engine with cylinder deactivation

• US 7,647,766 B2
• Filed: 10/15/2007
• Issued: 01/19/2010
• Est. Priority Date: 03/05/2004
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Goralski, Christian T. Jr., Surnilla, Gopichandra, Smith, Stephen B.
• Primary Examiner(s): NGUYEN, TU MINH
• Application Number:
  US11/872,150
• Publication Number:
  US 20080066450A1
• Time in Patent Office: 827 Days
• Field of Search: 602/74, 602/78, 602/85, 602/87, 602/88, 602/99, 603/02, 123/198.F, 123/481, 123/520, 123/691, 123/692
• US Class Current: 60/285
• CPC Class Codes: F01N 13/011 having two or more purifying devices arranged in parallel
• CPC Class Codes: F01N 2430/02 by cutting out a part of engine cylinders
• CPC Class Codes: F01N 3/101 Three-way catalysts
• CPC Class Codes: F02B 17/005 having direct injection in the combustion chamber
• CPC Class Codes: F02B 2075/125 Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
• CPC Class Codes: F02D 13/0219 by shifting the phase, i.e. the opening periods of the valves are constant
• CPC Class Codes: F02D 13/06 Cutting-out cylinders
• CPC Class Codes: F02D 17/02 Cutting-out cutting-out engines in multiple engine arrangements F02D25/04
• CPC Class Codes: F02D 41/0032 Controlling the purging of the canister as a function of the engine operating conditions
• CPC Class Codes: F02D 41/0082 per groups or banks F02D41/0087 takes precedence
• CPC Class Codes: F02D 41/0087 Selective cylinder activation, i.e. partial cylinder operation deceleration cut-off F02D41/123
• CPC Class Codes: F02M 25/089 Layout of the fuel vapour installation
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

Various systems and methods are disclosed for carrying out combustion in a fuel-cut operation in some or all of the engine cylinders of a vehicle. Further, various subsystems are considered, such as fuel vapor purging, air-fuel ratio control, engine torque control, catalyst design, and exhaust system design.

Claims

1. A system comprising:

an engine having a first and second bank of cylinders, said first bank having a first and second group of cylinders, said second bank having a third and fourth group of cylinders;

a first emission control device coupled to said engine to receive gasses exhausted from said first group, said first emission control device not receiving gasses exhausted from said third group; and

a second emission control device coupled to said engine to receive gasses exhausted from said third group, said second emission control device not receiving gasses exhausted from said first group.

2. The system of claim 1 wherein said first emission control device does not receive gasses exhausted from said second and fourth group.

3. The system of claim 1 wherein said second emission control device does not receive gasses exhausted from said second and fourth group.

4. The system of claim 1 further comprising:

a third emission control device coupled downstream of both said first and second emission control devices to receive gasses exhausted from said first, second, third, and fourth group of cylinders.

5. The system of claim 4 wherein said third emission control device receives untreated gasses exhausted from said second and fourth group.

6. The system of claim 4 wherein said third emission control device receives gasses exhausted from said first, second, third, and fourth group.

7. A system comprising:

an engine having a first and second bank of cylinders, said first bank having a first and second group of cylinders, said second bank having a third and fourth group of cylinders;

a first emission control device coupled to said engine to receive gasses exhausted from said first group;

a second emission control device coupled to said engine to receive gasses exhausted from said third group; and

wherein said first emission control device does not receive gasses exhausted from said second, third, and fourth group.

8. A system comprising:

an engine having a first and second bank of cylinders, said first bank having a first and second group of cylinders, said second bank having a third and fourth group of cylinders;

a first emission control device coupled to said engine to receive gasses exhausted from said first group;

a second emission control device coupled to said engine to receive gasses exhausted from said third group; and

wherein said second emission control device does not receive gasses exhausted from said first, second, and fourth group.