Browse Prior Art Database

Fuel supply warning system

IP.com Disclosure Number: IPCOM000032898D
Publication Date: 2004-Nov-18
Document File: 2 page(s) / 30K

Publishing Venue

The IP.com Prior Art Database

Abstract

Motor vehicles are usually equipped with a fuel gauge indicating the amount of fuel available in the tank. However, problems can arise in steep upward slopes when the fuel runs backwardly in the tank so that it cannot be supplied to the motor. This invention provides a warning system that indicates to the driver of the vehicle when there is a potential risk for engine breakdown due to a steep upward slope. This is achieved by using information from an angle sensor together with information from a conventional fuel gauge sensor such that when the angle sensor indicates a large tilt angle and the fuel gauge sensor simultaneously indicates a small amount of fuel in the tank, the driver is alerted of this fact, e.g. by the lightning of a warning light on the instrument panel.

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 51% of the total text.

Fuel supply warning system

Motor vehicles are usually equipped with a fuel gauge indicating the amount of fuel available in the tank. However, problems can arise in steep upward slopes when the fuel runs backwardly in the tank so that it cannot be supplied to the motor, whereby an undesired engine breakdown can occur before the fuel gauge has managed to indicate the interruption in fuel supply.

The object of the invention is to provide a warning system that indicates to the driver of the vehicle when there is a potential risk for engine breakdown due to a steep upward slope. This is achieved by using information from an angle sensor together with information from a conventional fuel gauge sensor such that when the angle sensor indicates a large tilt angle and the fuel gauge sensor simultaneously indicates a small amount of fuel in the tank, the driver is alerted of this fact, e.g. by the lightning of a warning light on the instrument panel. The fuel gauge sensor is usually located in a central part of the fuel tank, which means that in most cases the fuel gauge will not have enough time to respond to the change in fuel distribution in the tank due to a steep upward slope before an undesired engine breakdown have occurred. The present invention utilizes information both from the fuel gauge sensor and an angle sensor, which means that the driver can be alerted before the situation becomes critical.

Fig. shows a flow-chart illustrating schematically an embodiment of the invention, relating primarily to the use of the invention in a heavy vehicle such as a truck. Signals from an angle sensor 12 and a fuel gauge sensor 14 are received by a control unit 10. The control unit is preferably an existing control unit used for several different purposes in an internal communication system in the vehicle. The angle sensor 12 can preferably be an existing sensor arranged e.g. in connection to a control unit for an automatic or semi-automatic gear box, where angle sensors are used to control the gear changing, or in an alarm system of the vehicle as will be described more detailed in the following: In heavy vehicles, the motor is often accessible by lifting the driving compartment. In order to prevent thefts from the motor, an alarm can be provided that uses an angle sensor to detect the tilt angle...