US 2022/0010741 A1 · METHODS AND SYSTEMS FOR ENGINE CONTROL

Abstract

Various methods and systems are provided for dynamically assigning cylinders to cylinder sets in engines having two or more cylinder banks, wherein each cylinder bank is fed intake air by a separate intake manifold, and wherein each cylinder bank includes a separate exhaust manifold. In one example, the current disclosure teaches comparing engine operating conditions against a plurality of predetermined override conditions, and responding to the engine operating conditions matching a predetermined override condition of the plurality of predetermined override conditions by reassigning at least a first cylinder of a first cylinder bank from a first cylinder set to a second cylinder set, and adjusting an operating parameter of the second cylinder set and first cylinder set based on the override condition. In this way, cylinders may be dynamically assigned to cylinder sets based, from a default cylinder set, based on occurrence of predetermined override conditions.

Claims20

Dependent claims

A method, comprising:

assigning a first plurality of cylinders of a first cylinder bank to a first cylinder set, wherein the first cylinder bank comprises a first intake manifold;
assigning a second plurality of cylinders of a second cylinder bank to a second cylinder set, wherein the second cylinder bank comprises a second intake manifold separate from the first intake manifold;
estimating engine operating conditions;
comparing the engine operating conditions against a plurality of predetermined override conditions;
and
responding to the engine operating conditions matching a predetermined override condition of the plurality of predetermined override conditions by:
reassigning at least a first cylinder of the first plurality of cylinders of the first cylinder bank to the second cylinder set;
and
adjusting an operating parameter of each of the first and second cylinder sets based on the predetermined override condition.

6 more elements

A method for an engine, the method comprising:

responding to startup of the engine by:
assigning all cylinders of a first cylinder bank to a first cylinder set;
and assigning all cylinders of a second cylinder bank to a second cylinder set;
comparing engine operating conditions against a plurality of predetermined override conditions;
and
responding to the engine operating conditions matching a predetermined override condition of the plurality of predetermined override conditions by:
reassigning at least a first cylinder of the first cylinder bank to the second cylinder set;
and
adjusting an operating parameter of each of the first and second cylinder sets based on the predetermined override condition.

6 more elements

Dependencies are inferred from the claim text.

Methods and systems for engine control

Life of this patent

Methods and systems for engine control

Life of this patent

Abstract

Claims20