CS228500B1 - Connection of a fuel gauge to measure vacuum in the intake manifold of internal combustion engines - Google Patents

Abstract

The purpose of the invention is to enable the reduction of fuel consumption of combustion engines, especially of automobiles. The stated purpose is achieved by connecting a fuel level indicator to measure the vacuum in the intake manifold of the engines in such a way that either a transmitter (1) for measuring the fuel level or a transmitter (2) for measuring the vacuum level, which is sensed by a sensor (7) in the engine intake manifold, can be alternatively connected to the fuel level indicator, i.e. the fuel gauge, which has the reference number (3) in the figure, by means of a switch (6). The driver should drive in such a way that, while maintaining smooth driving, he maintains the vacuum at the highest possible value, which will be reflected, especially in urban traffic, in lower fuel consumption. The fuel level can be checked by switching the switch (6), while the minimum reserve level is continuously monitored by a bulb (4). The light bulb (5j signals to the driver (peripherally visible) by lighting up that the vacuum has dropped below the limit corresponding to economical driving. Located on the dashboard, it informs the driver even in difficult traffic situations.

Description

The invention relates to motor vehicles with an internal combustion engine, in particular to vehicles in which the amount of fuel in the tank is indicated by a separate fuel meter.

Up to now known fuel gauge connections only give information about the fuel condition for the entire period of operation. If another quantity is measured, e.g. vacuum in the intake manifold, which has a direct effect on fuel consumption, is used to indicate another special instrument on the instrument panel, which increases the cost of production, reduces the transparency of the instrumentation and occupies space.

The above-mentioned problems are solved by the wiring according to the invention, which is based on the fact that the fuel gauge is alternatively switchable so as to indicate the amount of vacuum in the engine intake manifold.

By switching the fuel gauge to indicate the vacuum condition in the intake manifold, the operator receives this important continuous information (from the point of view of consumption), which can help the engine operation mode to achieve more fuel efficient use compared to the flood, low specific consumption. It is assumed that the information on the status of the fuel supply is not needed continuously, it is sufficient to occasionally switch to check the data, while the critical amount, the so-called. reserve, is signaled independently of switching by a standard control bulb, which lights up when the fuel level drops to so-called. reserve value.

In the drawing, FIG. The circuit according to the invention is shown.

The resistance with the float-controlled transmitter 1 changes its ohmic value and causes the coil pointer 3 to vary according to the fuel level in the tank when the switch 6 is in the bold line. By moving the switch 6 to the dotted position, the coil indicator 3 indicates the amount of vacuum in the intake manifold 8, converted by the vacuum sensor 7 to the movement of the transducer resistor 2. The fuel consumption is higher, the lower the vacuum in the intake manifold.

At the resistance of the transmitter 2, the contact of the bulb 5 is in a position corresponding to a vacuum limit value which still corresponds to the economic operation of the respective engine. The contact connects the circumference of the bulb 5, each time the vacuum drops below this limit. The operator may be guided by the data of this bulb 5, which can be perceived by peripheral vision and thus e.g. at the same time, the driver of the motor vehicle may be concentrated on the traffic situation. A prerequisite is the location of the bulb in the operator's field of vision.

Claims (1)

A fuel gauge for the measurement of vacuum in the intake manifold of an internal combustion engine, characterized in that a transmitter (1) for measuring the fuel level or a transmitter (2) for measuring the amount of vacuum is invented to the periphery of the fuel gauge (3). , by means of a sensor (7), in the intake manifold (8) of the internal combustion engines.