Device for controlling automatic stopping of vehicle engine
US-9045130-B2 · Jun 2, 2015 · US
Drive control device for vehicle
US9440653B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9440653-B2 |
| Application number | US-201314413492-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 15, 2013 |
| Priority date | Oct 19, 2012 |
| Publication date | Sep 13, 2016 |
| Grant date | Sep 13, 2016 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A drive control device for a vehicle including an engine and a clutch device provided in a power transmission path between the engine and a drive wheel includes: a normal traveling unit causing the vehicle to travel while the engine is connected to the drive wheel; a free-run coasting unit disconnecting the engine from the drive wheel during traveling and causing the vehicle to coast while the engine is stopped; a neutral coasting unit disconnecting the engine from the drive wheel during traveling and causing the vehicle to coast while the engine is autonomously operated; and a coasting switching control unit setting an upper limit value of an upward gradient of a road surface, at which the neutral coasting is stopped, such that the upper limit value is larger than an upper limit value of the upward gradient of the road surface, at which the free-run coasting is stopped.
First claim
Opening claim text (preview).
The invention claimed is: 1. A drive control device for a vehicle including an engine and a clutch device provided in a power transmission path between the engine and a drive wheel, comprising: a normal traveling unit configured to execute normal traveling in which the vehicle travels in a state where the engine is connected to the drive wheel; a free-run coasting unit configured to execute free-run coasting in which the engine is disconnected from the drive wheel by the clutch device during traveling and the vehicle coasts while the engine is stopped; a neutral coasting unit configured to execute neutral coasting in which the engine is disconnected from the drive wheel by the clutch device during traveling and the vehicle coasts while the engine is autonomously operated; and a coasting switching control unit configured to set an upper limit value of an upward gradient of a road surface, at which the neutral coasting is stopped, such that the upper limit value of the upward gradient of the road surface at which the neutral coasting is stopped is larger than an upper limit value of the upward gradient of the road surface at which the free-run coasting is stopped. 2. The drive control device according to claim 1 , wherein the coasting switching control unit is configured to stop the free-run coasting and to start the normal traveling when the upward gradient of the road surface becomes larger than the upper limit value of the upward gradient of the road surface, at which the free-run coasting is stopped, during the free-run coasting, and the coasting switching control unit is configured to stop the neutral coasting and to start the normal traveling when the upward gradient of the road surface becomes larger than the upper limit value of the upward gradient of the road surface, at which the neutral coasting is stopped, during the neutral coasting. 3. The drive control device according to claim 1 , wherein the coasting switching control unit is configured to stop the free-run coasting and to start the neutral coasting when the upward gradient of the road surface becomes larger than the upper limit value of the upward gradient of the road surface, at which the free-run coasting is stopped, during the free-run coasting, and the coasting switching control unit is configured to stop the neutral coasting and to start the normal traveling when the upward gradient of the road surface becomes larger than the upper limit value of the upward gradient of the road surface, at which the neutral coasting is stopped, during the neutral coasting. 4. The drive control device according to claim 1 , wherein the coasting switching control unit is configured to select the free-run coasting when the upward gradient of the road surface is smaller than the upper limit value of the upward gradient of the road surface, at which the free-run coasting is stopped.
Assignees
Inventors
Classifications
Road slope, i.e. the inclination of a road segment in the longitudinal direction · CPC title
including control of driveline clutches · CPC title
including control of combustion engines · CPC title
Clutch engagement state · CPC title
- B60W30/18072Primary
Coasting · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9440653B2 cover?
- A drive control device for a vehicle including an engine and a clutch device provided in a power transmission path between the engine and a drive wheel includes: a normal traveling unit causing the vehicle to travel while the engine is connected to the drive wheel; a free-run coasting unit disconnecting the engine from the drive wheel during traveling and causing the vehicle to coast while the …
- Who is the assignee on this patent?
- Suzuki Takeaki, Matsunaga Masaki, Kido Yasunari, and 9 more
- What technology area does this patent fall under?
- Primary CPC classification B60W30/18072. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 13 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).