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MarketScreener Homepage  >  Equities  >  Tokyo  >  Nissan Motor Co Ltd    7201   JP3672400003

NISSAN MOTOR CO LTD

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Japan - Patent Issued for Vehicle Traveling Control Method And Vehicle Traveling Control Device (USPTO 10,364,759): Nissan Motor Co. Ltd.

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08/14/2019 | 05:33pm EDT

2019 AUG 14 (NewsRx) -- By a News Reporter-Staff News Editor at Daily Asia Business -- Nissan Motor Co. Ltd. (Kanagawa, Japan) has been issued patent number 10,364,759, according to news reporting originating out of Alexandria, Virginia, by NewsRx editors.

The patent’s inventors are Koike, Tomoyuki (Kanagawa, Japan); Watanabe, Munemitsu (Kanagawa, Japan); Koishi, Akifumi (Kanagawa, Japan); Tsuchiya, Terumasa (Kanagawa, Japan); Tahara, Masahiko (Kanagawa, Japan); Tezuka, Atsushi (Kanagawa, Japan).

This patent was filed on August 20, 2015 and was published online on August 12, 2019.

From the background information supplied by the inventors, news correspondents obtained the following quote: “Technical Field

“The present invention relates to a vehicle traveling control method and a vehicle traveling control device.

“Related Art

“A control device for controlling a vehicle is disclosed in PTL1, which device stops the engine of a vehicle and decelerates the vehicle by inertial traveling when a vehicle speed detected by a vehicle speed detection means is higher than a lower limit, and which starts the engine and accelerates the vehicle when the vehicle speed detected by the vehicle speed detection means drops below the lower limit.”

Supplementing the background information on this patent, NewsRx reporters also obtained the inventors’ summary information for this patent: “Fuel in a fuel tank is sucked by a fuel pump and sent to the engine of a vehicle. Some fuel tanks include a fuel chamber in which is disposed the suction port of a fuel pump, which ejects a part of fuel sucked from the fuel chamber into the fuel chamber via a fuel line, to generate negative pressure by which fuel in a region outside the fuel chamber of the fuel tank is sucked into the fuel chamber.

“For such fuel tanks, when the fuel pump is stopped upon engine stop during inertial traveling, the fuel line through which a part of fuel sucked by the fuel pump is returned to the fuel chamber is no longer filled with fuel, and therefore, it may be impossible to obtain negative pressure for sucking fuel to the fuel chamber immediately after engine restart. As a result, when the remaining fuel amount in the fuel tank is small, and moreover, the fuel in the fuel chamber is in a one-sided distribution owing to, for example, the tilt of the vehicle, a sufficient amount of fuel cannot be sucked from the suction port of the fuel pump and the restart of the engine is likely to be delayed.

“One or more embodiments of the present invention makes the delayed restart of the engine less likely to occur at the end of inertial traveling when the remaining fuel amount in the fuel tank is small.

“According to one or more embodiments of the present invention, there is provided a vehicle traveling control method including: detecting a remaining fuel amount in a fuel tank including a fuel chamber in which a suction port of a fuel pump is disposed for sucking fuel to be supplied to an engine, the fuel tank being configured to generate negative pressure for sucking fuel to the fuel chamber by ejecting a part of fuel sucked by the fuel pump into the fuel chamber via a fuel line; permitting, when a predetermined condition is satisfied, inertial traveling during which a vehicle travels, with the engine kept stopped; and operating, when the detected remaining fuel amount is less than a first threshold, the fuel pump despite the engine stopped owing to the inertial traveling.

“It is to be understood that both the above general description and the following detailed description are merely exemplary and explanatory and are not restrictive of the present invention as claimed.”

The claims supplied by the inventors are:

“The invention claimed is:

“1. A vehicle traveling control method comprising: detecting a remaining fuel amount in a fuel tank including a fuel chamber in which a suction port of a fuel pump is disposed for sucking fuel to be supplied to an engine, the fuel tank being configured to generate negative pressure for sucking fuel to the fuel chamber by ejecting a part of fuel sucked by the fuel pump into the fuel chamber via a fuel line; permitting, when a predetermined condition is satisfied, inertial traveling during which a vehicle travels, with the engine kept stopped; operating, when the detected remaining fuel amount is less than a first threshold, the fuel pump despite the engine stopped owing to the inertial traveling; and prohibiting stop of the engine when the detected remaining fuel amount is less than a second threshold smaller than the first threshold.

“2. The vehicle traveling control method according to claim 1, further comprising: stopping the fuel pump when the detected remaining fuel amount is equal to or more than the first threshold and the engine is stopped during the inertial traveling.

“3. The vehicle traveling control method according to claim 1, further comprising: giving a warning for remaining fuel amount when the detected remaining fuel amount is less than a third threshold larger than the first threshold.

“4. The vehicle traveling control method according to claim 1, further comprising: detecting a tilt factor tilting a fuel surface in the fuel tank with respect to a horizontal plane of the vehicle; and changing the first threshold according to a detected magnitude of the tilt factor.

“5. The vehicle traveling control method according to claim 1, further comprising: detecting a tilt factor tilting the fuel surface in the fuel tank with respect to a horizontal plane of the vehicle; and changing the second threshold according to the detected magnitude of the tilt factor.

“6. A vehicle traveling control device for controlling traveling of a vehicle, the vehicle including a fuel tank including a fuel chamber in which a suction port of a fuel pump is disposed for sucking fuel to be supplied to an engine, the fuel tank being configured to generate negative pressure for sucking fuel to the fuel chamber by ejecting a part of fuel sucked by the fuel pump into the fuel chamber via a fuel line, the vehicle traveling control device comprising: a fuel gauge configured to detect a remaining fuel amount in the fuel tank; and a controller configured to permit, when a predetermined condition is satisfied, inertial traveling during which the vehicle travels, with the engine stopped, and to operate, when the detected remaining fuel amount is less than a first threshold, the fuel pump despite the engine stopped owing to inertial traveling; and wherein the controller is configured to prohibit stop of the engine when the detected remaining fuel amount is less than a second threshold smaller than the first threshold.

“7. The vehicle traveling control device according to claim 6, wherein the controller is configured to give a warning for remaining fuel amount when the detected remaining fuel amount is less than a third threshold larger than the first threshold.”

For the URL and additional information on this patent, see: Koike, Tomoyuki; Watanabe, Munemitsu; Koishi, Akifumi; Tsuchiya, Terumasa; Tahara, Masahiko; Tezuka, Atsushi. Vehicle Traveling Control Method And Vehicle Traveling Control Device. U.S. Patent Number 10,364,759, filed August 20, 2015, and published online on August 12, 2019. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=10,364,759.PN.&OS=PN/10,364,759RS=PN/10,364,759

(Our reports deliver fact-based news of research and discoveries from around the world.)

Copyright © 2019 NewsRx LLC, Daily Asia Business, source Geographic Newsletters

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