Fuel-efficient driving system

A driving system and fuel technology, applied in fuel injection control, control/regulation system, combustion engine, etc., can solve problems such as fuel consumption deterioration and achieve the effect of improving fuel efficiency

Active Publication Date: 2011-11-09
VOLVO TRUCK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with Image 6 In the same situation as shown, the actual vehicle speed Va at the downhill start point P2 exceeds the target vehicle speed Vt when entering the downhill, and the frequency of auxiliary braking during the downhill becomes higher, and there is still the problem of poor fuel consumption.

Method used

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Embodiment Construction

[0053] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0054] figure 1 Among them, the fuel-saving driving system according to the embodiment of the present invention is indicated by reference numeral 100 as a whole.

[0055] The fuel-saving driving system 100 has a vehicle 1, a GPS 2 as a vehicle position specifying device, a vehicle speed sensor 3, an engine controller 4, an in-vehicle communication network 5, and a control unit 10 as a control means of the automatic fuel-saving driving system.

[0056] In the present embodiment, the position of the vehicle is specified using the global positioning system, and the GPS 2 as the vehicle position specifying device receives position information and the like from satellites of the global positioning system.

[0057] The in-vehicle communication network 5 connects the control unit 10 , the vehicle speed sensor 3 and the engine controller 4 .

[0058] figure 2 The structure...

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PUM

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Abstract

A fuel-efficient driving system enabling fuel-efficient driving with a smooth driving feeling by linearly and gradually decreasing the target vehicle speed from the control start till the vehicle passes the downhill start point without repeating fuel cut and injection. The fuel-efficient driving system includes a vehicle position identifying device (2) for identifying the position of the vehicle,a storage device (11) for storing data relating to downhills existing forward in the direction of travel of the vehicle, a vehicle-speed measuring device (3) for measuring the speed (Va) of the vehicle (1), and a control device (10). The control device (10) has a function of determining (computing) the target speed (required speed Vd) of the vehicle (1) from the speed (Va) of the vehicle and the data relating to the downhills.

Description

technical field [0001] The present invention relates to an automatic control system for fuel-saving driving of an automobile, and more specifically, to an automatic control system capable of reducing fuel consumption when moving downhill. Background technique [0002] As prior art, a fuel-saving system and a control method for effectively promoting fuel-saving driving using road gradient information are disclosed. (For example, refer to Patent Document 1). [0003] In this prior art (Patent Document 1), acceleration energy on a downhill is utilized, and more specifically, deceleration control is performed before the downhill to improve fuel efficiency. [0004] In addition, in this prior art (Patent Document 1), the advice position of fuel cut before going downhill (position for giving advice to the driver) or the control position of fuel cut in the automatic fuel-saving driving system (performed by automatic control The location of the fuel cutoff) is determined by the ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D29/02B60K31/00B60T7/12F02D41/04
CPCB60W2550/143B60W2550/402F02D41/045B60Y2200/14B60W30/18009B60T7/12F02D41/123B60T7/18Y02T10/56B60T2201/04B60W2552/20B60W2556/50Y02T10/40Y02T10/84
Inventor 西山义孝久保友纪
Owner VOLVO TRUCK CORP
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