Engine control device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorYusuke Ouchi
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Abstract
An engine control device includes that controls an air excess rate of each of N (an integer of 2 or more) cylinders by controlling an intake air amount and a fuel injection amount of each of the N cylinders; and a determination unit for determining whether or not there is a request to switch the air excess rate controlled by λ1 to λ2 different from λ1. When an affirmative determination is made by the determination unit, the control unit controls the air excess rate such that a proportion of L combustion strokes at λ2 to consecutive K (an integer greater than N) combustion strokes increases from 0% to 100% in M (an integer greater than N) steps.
Claims6
An engine control device comprising a processor configured to:
- control an air excess rate of each of N cylinders by controlling an intake air amount and a fuel injection amount of each of the N cylinders;
- determine whether there is a request to switch the air excess rate controlled to λ1 to a λ2 different from λ1;
- and
- in response to determining that there is the request to switch the air excess rate controlled to λ1 to the λ2, execute a transition process, the transition process including controlling the air excess rate such that a proportion of L combustion strokes at the λ2 to consecutive K combustion strokes increases from 0% to 100% in M steps, wherein
- N is an integer of 2 or more,
- K is an integer greater than N, and
- M is an integer greater than N.
Dependencies are inferred from the claim text.