WO2011009661A1

WO2011009661A1 - Device for activating and deactivating operating modes of an internal combustion engine, start/stop system for a motor vehicle and method for operating an internal combustion engine

Info

Publication number: WO2011009661A1
Application number: PCT/EP2010/057204
Authority: WO
Inventors: Wolfgang Niem; Thomas Huber; Hans-Robert Schneider; Thomas Eymann; Florian Zaunert; Andreas Engelsberg; Christian Prag; Constantino Schillebeeckx
Original assignee: Robert Bosch Gmbh
Priority date: 2009-07-22
Filing date: 2010-05-26
Publication date: 2011-01-27
Also published as: DE102009027904A1

Abstract

The invention relates to a device for activating and deactivating operating modes of an internal combustion engine, in particular an internal combustion engine for a motor vehicle, wherein a plurality of operating modes of the internal combustion engine which reduce energy consumption and/or the emission of pollutants can be selectively activated and deactivated by an operator. Furthermore, the invention relates to a method for operating an internal combustion engine, in particular an internal combustion engine for a motor vehicle, in a method of operation which reduces energy consumption and/or the emission of pollutants, wherein the internal combustion engine can be operated sequentially and/or in parallel with a plurality of operating modes which reduce energy consumption and/or the emission of pollutants.

Description

description

title

Device for switching on or off operating modes of a combustion engine, start / stop system for a motor vehicle, and method for operating an internal combustion engine

The invention relates to a device for switching on or off of operating modes of an internal combustion engine to z. B. a motor vehicle according to a selection of

Operate operating modes. Furthermore, the invention relates to a start / stop system for a motor vehicle. Furthermore, the invention relates to a method for operating an internal combustion engine in an operation that reduces energy consumption and / or harmful gas emissions.

State of the art

Today's start / stop systems for motor vehicles operate to terminate fueling to an internal combustion engine when the motor vehicle stops or is already stationary for a certain short period of time. During this

Standstill time consumers of electrical energy, such. B. lighting equipment or a radio, powered by a battery of the motor vehicle with electric current. If, in the following, a clutch of the motor vehicle is actuated, the first gear is engaged and the internal combustion engine is started automatically. The period for starting the engine is less than the time to operate and then release the clutch; As a result, the driver of the motor vehicle experiences no time delay when restarting. However, such start / stop systems only work under certain conditions.

Thus, start / stop systems work at low outside temperatures or an accu- low battery capacity of the battery. This results in a comparatively inconsistent behavior of the motor vehicle. Some

Start / stop systems can be shut down by means of an ECO control element, which gives the driver the feeling of a uniform driving behavior under his own leadership. The ECO function of the motor vehicle is in

Contrary to the ever-increasing efforts to minimize the emission of climate-damaging carbon dioxide.

task

It is an object of the invention to provide an improved means for turning on or off operating modes of an internal combustion engine, an improved start / stop system for a motor vehicle, and an improved method of operating an internal combustion engine in an energy and / or noxious gas emissions reducing Specify operation. This should on the one hand be possible to minimize energy consumption and / or emissions of harmful gas emissions, in particular climate-damaging carbon dioxide emissions, and thus also a fuel consumption of the motor vehicle and on the other hand to give the driver the impression of a uniform driving behavior under its own management , Ie. the driver is to be able to independently determine the behavior of the motor vehicle in terms of energy consumption and / or operating modes of the motor vehicle that reduce harmful gas emissions in a timely apron. Disclosure of the invention

The object of the invention is achieved by means of a device for switching on or off of operating modes of an internal combustion engine, according to claim 1; a start / stop system for a motor vehicle, according to claim 7; and a method for operating an internal combustion engine in an energy consumption and / or harmful gas emissions-reducing operation, according to claim 8 dissolved. Advantageous developments of the invention will become apparent from the dependent claims.

The inventive device for switching on or off of operating modes of an internal combustion engine, in particular an internal combustion engine of a

Motor vehicle, is characterized by the fact that a large number of energy consumption and / or harmful gas emissions mitigating, in particular carbon dioxide emissions reducing operating modes by a driver partially switched on or off. Ie. In the case of a multiplicity of operating modes which reduce energy consumption and / or harmful gas emissions, according to the invention the driver is given the opportunity to operate or not to operate the motor vehicle in operating modes which reduce only one or more or even all energy consumption and / or harmful gas emissions. He can let these operating modes be partially effective depending on the need or comfort. It can therefore z. B. special energy consumption and / or harmful gas emissions, such. B. carbon dioxide emissions reducing operating modes, on or off.

Preferred energy consumption and / or emission modes mitigating harmful gas emissions are the following: energy consumption and / or emission mode mitigating operating mode, especially at full or part load, of the internal combustion engine, energy recovery within the engine

Motor vehicle, in particular during a downhill and / or in an idle, a charging strategy for a battery or an accumulator of the motor vehicle, in particular during acceleration, downhill and / or idling, a Einbzw. Decoupling a drive train of the motor vehicle, in particular during a downhill and / or idling, an air conditioning of a passenger compartment, in particular on hot days, an automated gearshift, in particular with a focus on low fuel consumption. Other modes of operation are of course applicable as long as they have an impact on energy consumption and / or emissions of harmful gas, that is, in particular, on fuel consumption and thus also on the carbon dioxide emissions of the motor vehicle. The operating modes can work in parallel and / or sequentially; d. H. the vehicle may be operated in two or more such modes of operation simultaneously.

In one embodiment of the invention, the operating modes are switched on and off by means of at least one hardware operating element. This can be the

Hardware control to be provided in a dashboard of the motor vehicle. Applicable are, for example, mechanical buttons, buttons, controls, rotary or selector switch. Depending on the activation / deactivation of the hardware control element, the driver can influence the driving and comfort behavior of the motor vehicle according to his wishes and preferences. If only a single hardware control element is used, this is preferably a selector switch with more than two positions. Ie. in an extreme position, all relevant operating modes are on and in the other extreme position, all relevant operating modes are switched off. In the one or more positions of the selector in between are in ascending or descending

Order the energy consumption and / or harmful gas emissions reducing operating modes added or wegschaltbar. For example, in such an intermediate position, two modes of operation that reduce harmful gas or carbon dioxide emissions may be established and one or a plurality of other modes of operation that reduce emissions of harmful gas or carbon dioxide emissions may not be established. An additional application for energy consumption reducing operating modes is of course applicable.

In one embodiment of the invention, the switching on and switching off of the energy consumption and / or emission methods that reduce harmful gas emissions takes place by means of at least one software control element. Here, the software control part of a graphical user interface or surface in the motor vehicle, such. B. be a touch screen. Applicable are, for example, electronic buttons or safety edges. Depending on the activation / deactivation of the software control element, the driver can influence the driving and comfort behavior of the motor vehicle according to his wishes and preferences. Such electronic control can be used in addition to hardware controls or in isolation. In embodiments of the invention, by means of an electronic control unit (ECU = Electronic / Engine Control Unit) relevant devices - ie consumers of electrical energy, such as lighting devices, one or a plurality of batteries or accumulators, an entertainment device, etc. - in the motor vehicle according to a Preselection controlled by the hardware or software control element. This can be done by a distributor or a corresponding control of a generator of electrical energy.

According to the invention, it is possible to selectively establish or selectively disregard operating modes of a motor vehicle which reduce specific energy consumption and / or harmful gas emissions. This can vary depending on one

Driver's request done. For example, it is possible to work in a comfortable ren operating mode to disregard a plurality of energy consumption and / or harmful gas emissions mitigating operating modes, whereas still one or a plurality of energy consumption and / or harmful gas emissions reducing operating modes are active, so z. For example, emissions of carbon dioxide are still minimized. On the other hand, it is also possible to avoid a higher energy consumption and / or higher emissions of harmful gases by as many relevant operating modes are preset by the driver. Brief description of the figures

The invention will be explained in more detail below with reference to embodiments with reference to the accompanying drawings. In the drawing show:

Figure 1 is a schematic end view of a detail of a dashboard of a motor vehicle, with controls for a device according to the invention for switching on and off of operating modes of the motor vehicle. and

Fig. 2 is a schematic diagram of an inventive control of consumers of electrical energy according to a preselection by a driver of the motor vehicle.

Embodiments of the invention

There are a large number of scenarios in motor vehicles which have an influence on power development and the operating conditions of the motor vehicle, which in turn has an effect on ride comfort, energy consumption and / or harmful gas emissions, in particular carbon dioxide emissions, of a combustion engine of the motor vehicle. This is, for example, a general driving mode (full / partial load), an energy recovery, a charging strategy for a battery 3 or accumulator 3 - see Fig. 2 -, a coupling of a drive train, air conditioning of a passenger compartment, an automated gearshift etc. These scenarios are implemented by a motor control 2 or an electronic control unit 2 in order to a possible to achieve a comfortable driving experience with the lowest possible fuel consumption.

In the following, the invention will be described in the application to the addition or deactivation of operating modes of an internal combustion engine or of a motor vehicle which reduce carbon dioxide emissions. However, the invention is analogously applicable to energy consumption or other harmful gas emissions reducing operating modes of the internal combustion engine or the motor vehicle. A driver of the motor vehicle may not always accept changes in driving behavior caused by the above or other scenarios. With the increasing number of carbon dioxide (or other, see above) degrading modes of operation of the motor vehicle, their mutual influence increases and the driver has to accept more and more of these "fixed presets." According to the invention, it is possible to have one or more of these

Turning functions on or off, which can be tailored to a particular driver, a homogeneous or consistent driving feel, while it is still possible to minimize emissions of carbon dioxide. In a certain driving situation of the motor vehicle, it considers a global one

For example, a strategy for minimizing carbon dioxide is necessary for charging the battery 3 or the accumulator 3 when requesting high power such as acceleration, while other functions such as air conditioning of the passenger compartment are still in operation a loss of performance of the motor vehicle has the consequence. However, if the driver perceives this power loss as disturbing, it is possible according to the invention to selectively interrupt the air conditioning of the passenger compartment in the event of acceleration and / or acceleration with charging the battery 3, while other or all other carbon dioxide reducing operating modes of the motor vehicle as are active before. Ie. the driver simply disables a single function to reduce carbon dioxide emissions instead of all functions. In this way, according to the invention, only a part of the minimization of emissions of carbon dioxide is eliminated in order to generate a typical driving feeling, while other functions of carbon dioxide-reducing operating modes are still established and fulfill their tasks. According to the invention, the driver - see Fig. 1 - only a corresponding control element 10, 1 to operate 1, what the corresponding function, ie the respective carbon dioxide reducing operating mode, activated or deactivated, ie on or off. Possible implementations of this concept are explained in more detail below.

Thus, it is possible to equip the device according to the invention with one or a plurality of hardware operating elements 10 and / or with one or a plurality of software operating elements 11. These can be mechanical and / or electronic buttons, buttons, controls, rotary switches, selector switches,

Be buttons or safety edges. The hardware operating elements 10 are preferably located on / in a dashboard 6, whereas the software operating elements 11 are preferably located on a graphical user interface 7. However, it is also possible to realize this by means of a mechanical or electronic selector switch, which has more than two positions, so not only an activating and a deactivating position.

Each operating element 10, 11 or any possible position of the relevant operating element 10, 11 is assigned a specific operating mode of the vehicle which reduces carbon dioxide in order to activate or deactivate it. Of course, it is also possible to assign more than just a carbon dioxide-reducing operating mode to an operating element 10, 11 or a possible position of the relevant operating element 10, 11, whereby a greater intervention can be made on a power development of the motor vehicle. In the case of hardware controls 10, it is preferred that a plurality of these are present in the dashboard 6, and these are formed as a switch 10, but preferably as a button 10. The device according to the invention operates in accordance with the specifications of the driver. Some drivers want a lower performance of the motor vehicle with a comparatively high input of carbon dioxide, while other drivers want a high power delivery with less entry into carbon dioxide.

Fig. 2 shows the inventive device of carbon dioxide reducing operating modes of the motor vehicle in a schematic representation. From the operating elements 10, 11, corresponding electrical signals are sent to the engine control 2 or the electronic control unit 2 (ECU = Electronic / Engine Control Unit) of the motor vehicle, which converts the selected by the driver setting for consumers of electrical energy 3, 4 accordingly. The implementation takes place in the present example, in particular in the area of the battery 3 or the accumulator 3 and one or a plurality of other consumers of electrical energy 4, such as interior or exterior lighting devices, an entertainment device, energy recovery, air conditioning of the passenger compartment, etc. The electronic Control unit 2 controls the internal combustion engine 1, a generator or a distributor of electrical energy 5 and possibly the consumer of electrical energy 3. Lines with arrows indicate electrical or mechanical power transport, whereas lines without arrows represent data lines.

Claims

claims

1 . Device for switching on or off operating modes of an internal combustion engine, in particular an internal combustion engine for a motor vehicle, characterized in that

that a plurality of power consumption and / or harmful gas emissions reducing operating modes of the internal combustion engine are selectively switched on and off.

2. Device according to claim 1, characterized in that such an energy consumption and / or harmful gas emissions mitigating operating mode of at least one of the following operating modes of the motor vehicle is:

a general energy consumption and / or harmful gas-reducing operating mode, in particular at full or partial load of the internal combustion engine (1);

an energy recovery, in particular at a departure and / or in an idle;

- A charging strategy for a battery (3) or an accumulator (3), in particular during acceleration, downhill and / or idling;

- A coupling or decoupling of a drive train, especially in a

Departure and / or idle;

an air conditioning of a passenger compartment, especially on hot days;

an automated gearshift, especially with focus on low fuel consumption.

3. Device according to claim 1 or 2, characterized in that the connection or disconnection of the energy consumption and / or harmful gas emissions reducing operating modes by means of at least one hardware control element (10) is feasible.

4. Device according to claim 3, characterized in that the hardware control element (10) in a dashboard (6) of the motor vehicle is arranged.

5. Device according to one of claims 1 to 4, characterized in that the connection or disconnection of the energy consumption and / or harmful gas emissions reducing operating modes by means of at least one software control element (1 1) is feasible.

6. Device according to one of claims 1 to 5, characterized in that the software control element (1 1) is part of a graphical user interface (7).

7. start / stop system for a motor vehicle with a device according to one of claims 1 to 6.

8. A method for operating an internal combustion engine, in particular an internal combustion engine for a motor vehicle, in an energy consumption and / or harmful gas emissions, in particular carbon dioxide emissions, mitigating mode of operation,

characterized in that

the internal combustion engine can be operated sequentially and / or in parallel in a plurality of operating modes that reduce energy consumption and / or harmful gas emissions.

9. The method according to claim 8, characterized in that such an energy consumption and / or harmful gas emissions reducing operation of the motor vehicle has at least one of the following operating modes:

an energy recovery, in particular at a departure and / or in an idle;

- A charging strategy for a battery (3) or an accumulator (3), in particular during acceleration, downhill and / or idling; a coupling or decoupling of a drive train, in particular during a downhill and / or idling;

air conditioning of a passenger compartment, especially on hot days,

- An automated gear shift, especially with focus less

Fuel consumption.

10. The method according to claim 8 or 9, characterized in that the operating modes of the internal combustion engine can be selectively switched on or off by an operator.