DE19816269C2 - Arrangement in a motor vehicle with an early warning system with outside temperature detection - Google Patents

Description

The invention relates to an arrangement in a motor vehicle with an early warning system with outside temperature detection for Issue of a warning signal when falling below a Temperature threshold and with a parking heater, wel ches can have an adjustable timer that is connected to the electronic control unit of the heater is connected, the time and / or duration of the auxiliary heating mode set by an operator on the timer can be.

In one of the aforementioned installed in a motor vehicle Auxiliary heater, as is known for example from DE 196 01 772 A1, can be switched by an operator clock for a simplification or (partial) automation of the Parking heater operation are preset so that, for example in the autumn of each year until the spring of The following year on workdays in the morning about 1 hour between 5 a.m. and Is preheated at 7 a.m. Now it is the case in autumn and in the spring there are still warm days that do not require heating do. Such a preset known heater is so willingly or involuntarily if necessary operated when this is not necessary in itself. It it goes without saying that this places an enormous burden on the environment and Use additional fuel to operate the heater is done.

The motor vehicle also contains an early warning system with which For example, help with an outside temperature measurement Risk of black ice on a display in the vehicle interior can be shown.

Starting from the aforementioned prior art, it is the task the invention, an arrangement of the type mentioned Art to train that with the help of simple measures further automation possible and on the one hand the parking heater device is actually only operated when heating  Makes sense, and on the other hand it already exists anyway early warning system not only in terms of construction without loss of function simplified, but possibly by additional radio tion is expanded.

The object underlying the invention is achieved by a Arrangement of the type specified in claim 1 solved.

The subject of the invention is advantageously further developed by the features of claims 2 to 7.

The essence of the invention is that with an arrangement in one Motor vehicle with early warning system and auxiliary heater the Ak Activation of the auxiliary heater operation of the auxiliary heater in Ab dependence of the Au detected by an outside temperature sensor Outside temperature of the vehicle takes place, and that then without if there is an outside temperature sensor when the temperature falls below nes temperature threshold a warning signal in the anyway existing early warning system for display in the vehicle feeds into the interior.

The temperature threshold in a control unit is preferred adjustable, the temperature threshold in particular is at -0 ° or just above freezing.

In particular, the warning signal can be converted into a separate early warning system in the form of a central vehicle information slide gnose system, in which all information of each Components converge, processed and called up can be fed and optically in this system and / or be displayed acoustically.

It is particularly advantageous if the early warning system in the Timer of the auxiliary heater is integrated, the warning signal in the time switch of the auxiliary heater  fed in and visually displayed on a display and / or is communicated acoustically via a loudspeaker.

The time switch is preferably designed as a module clock.

Furthermore, it can be provided that the warning signal in the electronic control unit for the engine's injection system automatic limitation or reduction of a maximum ge speed of the vehicle is fed.

The timer can also be extended by another function enriched and with an integrated road status indicator judging system ("RDS").

For a parking heater operation of a vehicle is therefore at play the stand-by function with a temperature-dependent Activation of the switch-on function designed, the Activation of the auxiliary heating mode depending on the outside temperature of the vehicle when the temperature falls below a door threshold value is carried out by target-actual temperature comparison, d. H. only occurs when the outside temperature sensor measured outside temperature low, e.g. B. below 4 ° C and heating is really necessary. It takes place a check instead of whether a heating operation is due a low outside temperature is required. As a result can save fuel for the operation of the heater the. The surroundings and atmosphere are not excessively burdened  tet. The heater has a functional advantage over it known models and creates more comfort. It can over a longer period in the supposedly cold year always the time switch for standby operation be preset, e.g. B. for early September to End of April. If it is warm in the border months, the heating becomes device is nevertheless not activated.

In addition, it is the essence of the invention, the same outside Temperature sensor of the auxiliary heater also for early warning system of the motor vehicle for an optical or acoustic Use display in the vehicle. This is how it works in a vehicle at least one outside temperature sensor along with a line connection saved. Is the temperature threshold for one Activation of the auxiliary heater with the temperature threshold worth for a (black ice) display in the early warning system table, if necessary, on a complete control unit be dispensed with in the vehicle. Isn't the early warning system provided as a separate system in a vehicle, but directly in the time switch of the auxiliary heater further structural simplifications, since then, for example Display of the time switch also as a display board for the early warning system can be used. The display of the time switch can then also be used for example for RDS. Overall he then there is a multifunctional compact timer Early warning system arrangement, which is simple, for example, on Dashboard of a vehicle can be accommodated. In particular through the integrated early warning and control system becomes an increased need for comfort and security of a user.

The invention is described below with reference to exemplary embodiments len with reference to the accompanying drawings wrote; show it:  

Fig. 1 is an auxiliary heater of a motor vehicle with a stand-by function in a circuit arrangement with an interior-temperature sensor and an outdoor temperature turfühler along with timer, wherein an electronic controller is provided in the auxiliary heater,

Fig. 2 shows the conditions of activation of the Einschaltfunk tion of the electronic control unit in a block, and

Fig. 3 shows the timer of FIG. 1 in an additional use as an early warning system.

According to the drawing, a heater 1 with stand-by function for a parking heater operation of a motor vehicle includes a switching clock 2 , which is connected to the electronic control unit 3 of the heating device, time t and / or time duration of the parking heater operation by an operator on the timer 2 can be set.

The activation A of the auxiliary heating mode takes place in dependence on the outside temperature T of the vehicle if the temperature falls below a temperature threshold Ts by the target actual temperature comparison, either in the timer 2 or in the electronic control unit 3 of the heater. If the current time t exceeds the programmable threshold value or time tp set on the time switch 2 , the heater is put into operation. Time t and temperature T are connected to one another via the AND element 10 according to FIG. 2.

The temperature threshold value Ts can be a fixed temperature value or an adjustable temperature setpoint.

Referring to FIG. 1, an outside temperature sensor 5 is for the detection of the actual temperature T outside the vehicle vorgese hen, which is in a line connection 8 to the switch 2. The time switch 2 has a setpoint generator 4 , which controls the electronic control unit 3 of the heater via a further line connection 9 .

A target / actual comparison is made with the outside temperature sensor 5 .

According to FIG. 3, an early warning system for a visual and acoustic display of a smooth ice condition or the like is integrated in the time switch 2 according to FIG. 1. Here the already existing outside temperature sensor 5 along with line connection is also used for the early warning system, in such a way that when the temperature falls below a warning signal is fed into the early warning system for a display in the vehicle interior.

The aforementioned temperature threshold can be in a Steuerge advises to be set.

The early warning system is thus integrated in the time switch 2 of the parking heater 1 , the warning signal being fed into the time switch of the parking heater and optically indicated on a display 11, for example by flashing, or acoustically communicated via a loudspeaker 12 . If necessary, the flashing display can be supported by a signal tone, ie the danger can be visually and acoustically communicated to the driver.

The switch 2 of Fig. 3 is further status report system-road ( "RDS") equipped with a BUILT-IN 13 and is formed as a module clock. Complete traffic information about the current road conditions can then be received via the RDS of the time switch in order to inform the driver in good time of possible dangers.

The warning signal of the early warning system for the detection of a Risk of black ice or the like can also be in the electronics cal control unit of the engine's injection system for automatic limiting or reducing a maximum speed speed of the vehicle can be fed to a vehicle white ter improve safety.

It is understood that alternatively the warning signal in a sepa early warning system in the form of a central vehicle information mations-Diagnostics-System, in which all information of the individual components come together, processed and can be accessed, fed and in this system can be displayed optically and / or acoustically, where le only outside temperature sensor with connection cable for morning Warning system and auxiliary heater are the same components.

Claims (7)

1. Arrangement in a motor vehicle with an early warning system with outside temperature detection to emit a warning signal when the temperature falls below a threshold value and with a parking heater ( 1 ), which can have an adjustable timer ( 2 ) that can be sent to the electronic control unit ( 3 ) of the Heater is connected, the time and / or duration of the auxiliary heating operation can be set by an operator on the time switch, characterized in that the activation (A) of the auxiliary heating operation of the auxiliary heater is dependent on the outside temperature (T) detected by an outside temperature sensor ( 5 ) ) of the vehicle it follows, and that the then already existing outside temperature sensor ( 5 ) when the temperature falls below a temperature threshold, a warning signal in the early warning system for a display feeds into the vehicle interior. 2. Arrangement according to claim 1, characterized, that the temperature threshold in a control unit is adjustable. 3. Arrangement according to claim 1 or 2, characterized, that the warning signal in a separate early warning system Form of a central vehicle information diagnosis system tems, in which all information of the individual compo elements converge, processed and called up can be fed and optically in this system and / or is displayed acoustically.   4. Arrangement according to claim 1 or 2, characterized in that the early warning system in the timer ( 2 ) of the heater ( 1 ) is integrated, the warning signal is fed into the timer of the heater and optically displayed on a display ( 11 ) and / or acoustically via a loudspeaker ( 12 ). 5. Arrangement according to claim 4, characterized in that the time switch ( 2 ) is designed as a module clock. 6. Arrangement according to one of claims 1 to 5, characterized, that the warning signal in the electronic control unit of the Engine injection system for automatic limitation or reducing a maximum driving speed stuff is fed. 7. Arrangement according to one of claims 3 to 6, characterized in that the time switch ( 2 ) is equipped with an integrated road status report system ("RDS") ( 13 ).