Engine control device
US-9657681-B2 · May 23, 2017 · US
Control apparatus of internal combustion engine
US2016305356A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016305356-A1 |
| Application number | US-201415103475-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 9, 2014 |
| Priority date | Dec 12, 2013 |
| Publication date | Oct 20, 2016 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A control apparatus includes a control member performing a center position control to align a specific crank angle of an engine with EGR system, which angle is called as center position, with a reference position when the engine is driven under a predetermined range. The center position is a geometric center of a figure defined by a transition of heat generation ratio through fuel combustion. The control member runs an ignition acceleration procedure when the engine satisfies at least one of specific conditions during an exhaust gas recirculation under the center position control. The ignition acceleration procedure is to inject more fuel for a pilot injection than a base amount determined in accordance with the center position control. The specific conditions includes: a condition that an engine load is smaller than a threshold value; and a condition that an engine rotational speed is smaller than a threshold value.
First claim
Opening claim text (preview).
1 . A control apparatus of an internal combustion engine having an EGR device, the control apparatus comprising a control member performing a center position control to align a crank angle defined as a center position with a reference position upon the engine being driven under a predetermined range for driving status, the center position being a geometric center of a figure defined by heat generation ratio through a fuel combustion in a cylinder of the engine, the control member running an ignition acceleration procedure upon at least one of specific conditions being satisfied during an exhaust gas recirculation with the EGR device under the center position control, the ignition acceleration procedure being to inject more fuel for a pilot injection of the engine before a main injection than a base amount for the pilot injection determined in accordance with the center position control, the specific conditions including: first condition of a load of the engine being smaller than a threshold load; and second condition of a rotational speed of the engine being smaller than a threshold rotational speed. 2 . The control apparatus according to claim 1 , wherein the reference position used in the center position control is set at a position to minimize a fuel consumption rate of the engine.
Assignees
Inventors
Classifications
- F02D41/04Primary
Introducing corrections for particular operating conditions (F02D41/14 takes precedence) · CPC title
by determining temperatures inside the cylinder, e.g. combustion temperatures · CPC title
- F02D41/403Primary
with pilot injections · CPC title
Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories · CPC title
using computer, e.g. microprocessor · CPC title
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Frequently asked questions
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- What does patent US2016305356A1 cover?
- A control apparatus includes a control member performing a center position control to align a specific crank angle of an engine with EGR system, which angle is called as center position, with a reference position when the engine is driven under a predetermined range. The center position is a geometric center of a figure defined by a transition of heat generation ratio through fuel combustion. T…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F02D41/04. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Oct 20 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).