• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:AT510269A4
    申请号:T0185610
    申请日:2010-11-11
    公开日:2012-03-15
    发明作者:Peter Dipl Ing Dr Schoeggl
    申请人:Avl List Gmbh；
    IPC主号:
    专利说明:

    - 1 -56097
    The invention relates to a method for the output generation of vehicles powered by internal combustion engines, in particular racing vehicles or sports vehicles, with a means for generating output by exhaust gas from the internal combustion engine in at least one of the output increase serving area of the body.
    A method and a device for generating drive on the underbody of racing and sports vehicles is known from DE 41 10 750 Al.
    In racing and sports vehicles accelerations, decelerations and cornering accelerations are achieved, which exceed the value of 1 g (= acceleration due to gravity) considerably. Such values are only possible if the limits of adhesion between the tires and the road surface are increased with aerodynamic aids. On the vehicle body strong downforce is generated. This purpose is served by front fins, rear wings and a special shape of the actual vehicle body. A dominating role is played by the design of the vehicle underbody. The aim is to accelerate the air flowing under the vehicle floor as much as possible. The higher their speed, the stronger according to the Bernoulli law their suction power and the stronger the force exerted on the vehicle underbody downforce. In order to achieve the strongest possible acceleration of the Unterbodeniuft, is today's racing cars used the kinetic energy of the exhaust gases: The underbody is bent at the rear of the vehicle up and usually shielded with vertical aerodynamic baffles to the side and possibly divided in the middle. In this way creates a diffuser for the air flowing under the vehicle. Into this diffuser zone, the ends of the exhaust pipes are introduced with horizontal jet direction aiming backwards. The exiting at high velocity exhaust gases exert on the air under the subsoil a suction effect. They increase their speed and thus their suction on the underbody and thus the output of the vehicle.
    The disadvantage is that the output induced by the exhaust gas flow is highly dependent on the engine speed. A reduction in the speed in curves thus adversely affects the resulting exhaust-induced output power.
    The object of the invention is to avoid these disadvantages and to increase the output force, in particular at low speeds traversed areas of the route. «*
    - 2 -
    According to the invention this is achieved in that - preferably dependent on the routing - the air ratio λ of the engine is changed, wherein in sections with increased demand for output the engine lean, preferably with an air ratio λ of at least 1.2 - more preferably at least 1 , 3 - is operated.
    The normally stoichiometric or rich-fueled internal combustion engine of a race car, for example a Formula 1 racing car, is thus heavily emaciated in areas where an increased output force of the vehicle is required, with leaning being preferably achieved by increasing the air flow rate. The increased air flow causes an increase in the emitted amount of exhaust gas and thus the flow velocity between the underbody and the road, which further allows a significant increase in the output power.
    The air ratio λ can be changed directly via an operating element, for example, on the steering wheel, but it is also possible that the air ratio indirectly by the driver, for example, depending on the selected gear and / or the speed of the internal combustion engine and / or at least one driving - or brake pedal position is changed.
    The increase in the air ratio λ can be limited in time to a defined duration, wherein the time can be set to a fixed or freely selectable by the driver value. Alternatively or additionally, it is also possible that the lean operation is automatically terminated at the curve exit, that is, for example, when the applied lateral forces or a steering turn falls below a limit.
    In order to ensure a sufficiently high output force for each position of the vehicle, can further be provided that the current output power is monitored by sensors on the vehicle and the air ratio is increased when the current output force falls below a target value for the output power.
    In the context of the present invention, it is further provided that the road guidance including areas with increased demand for output power is stored in an electronic database, the vehicle preferably having a position determination device with which the current position of the vehicle in the electronically stored route is determined. In this way, it is possible to specify areas with an increased need for output power for each current position of the racing vehicle on the racetrack.
    - 3 -
    It can further be provided that for each point of the electronically stored routing a soli value for the output power and the driving force is determined and stored, preferably determined based on the target values for the output force and the driving force for each point of the road guidance setpoint for the air ratio and is stored.
    In continuation of the invention can be provided that the current air ratio of the internal combustion engine is tracked at each point of the road guidance the stored setpoint of the air ratio. Thus, without any manual intervention by the driver, the best possible output for the vehicle can be automatically generated for each current position of the vehicle.
    The invention will be explained in more detail below with reference to FIGS.
    1 to 3 show various devices for increasing the output force in a vehicle for carrying out the method according to the invention.
    FIGS. 1 to 3 show diagrammatically the underbody 1 of a racing vehicle, as well as a rear wheel 2. As can be seen, the underbody in the area of the rear wheel 2 - viewed counter to the direction of travel F - is made rising and forms a diffuser 4 with the ground 3. With the arrows S exhaust flows are respectively indicated, which are introduced to increase the output force K at different points of a power take-off device. The diffuser 4 forms an output generating device. Another output generating device is formed by a rear wing 5. As can be seen in FIG. 1, the exhaust gas is supplied to the bottom of the rear wing 5 in accordance with the arrow Si in order to increase the output. Furthermore, exhaust gas can be supplied to the top of the subfloor 1.
    In FIG. 2, the underbody 1 in the transition to the diffuser 4 has an outflow opening 6, through which exhaust gas is introduced into the initial region of the diffuser 4.
    Fig. 3 time a variant in which the outflow opening 6 is disposed within the diffuser 4. The exhaust gas is thus introduced directly into the diffuser 4.
    In all the embodiments shown, the output force K acting on the rear wheels 2 is dependent on the speed of the exhaust gas flow S, Si.
    The proposed method provides that the internal combustion engine of the racing vehicle in areas in which increased output forces are required, heavily emaciated, for example, with an air ratio of at least λ = 1.2 - 4 - is operated, wherein the air flow rate increased by the internal combustion engine. This increased air flow leads to increased amounts of exhaust gas and exhaust gas velocities, which has an increasing effect on the achievable output forces K.
    The air ratio can be increased in the short term directly by the driver, for example by pressing a button or knob on the steering wheel. The duration of the increase can be linked to a time counter. Furthermore, it is conceivable to link the duration of the increase in the air ratio λ with the values of an acceleration sensor or to couple it to the steering angle so that, for example, at the exit of the curve, the air ratio can be reduced to the original value. Furthermore, it is also possible to change the air ratio as a function of the gear selection and / or the speed and / or an accelerator pedal and / or brake pedal indirectly by the driver so that when switching back the air ratio is automatically - for a certain duration-increased.
    It is particularly advantageous if areas of the routing in which increased output forces are required are stored in an electronic database. The vehicle has a positioning detection device, with which the current position of the vehicle is determined on the track. If the vehicle reaches an area of the route in which increased output forces K are required, the internal combustion engine is automatically operated lean, whereby additional output forces K can be built up very quickly. These additional output forces K can at least partially compensate for a loss of output due to curve-related speed decreases of the internal combustion engine, which in turn makes higher cornering speeds possible.
    权利要求:
    Claims (11)
    [1]
    1. A method for the output generation of vehicles powered by internal combustion engines, in particular racing vehicles or sports vehicles, with a means for generating output by exhaust gas from the internal combustion engine in at least one of the output increase serving area of the body, characterized in that - preferably depending on the route guidance - The air ratio λ of the internal combustion engine is changed, wherein in sections with increased demand for output force (K), the engine is lean, preferably with an air ratio λ of at least 1.2 - more preferably at least about 1.3 - operated.
    [2]
    2. The method according to claim 1, characterized in that the air ratio is increased directly or indirectly manually by the driver.
    [3]
    3. The method according to claim 1 or 2, characterized in that the air ratio is changed depending on the selected gear and / or the rotational speed of the internal combustion engine.
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that the air ratio λ is increased for a defined period of time.
    [5]
    5. The method according to any one of claims 1 to 4, characterized in that the lean operation is terminated when measured lateral forces and / or a determined steering turn falls below a defined limit.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that the current output power (K) is monitored by sensors on the vehicle and the air ratio is increased when the current output power (K) falls below a target value for the output power.
    [7]
    7. The method according to any one of claims 1 to 6, characterized in that the road management, including areas with increased demand for output power are stored in an electronic database.
    [8]
    8. The method according to claim 7, characterized in that the vehicle has a position determining device, with which the current position of the vehicle is determined in the electronically stored route guidance.

    - 6 -
    [9]
    9. The method of claim 7 or 8, characterized in that for each point of the electronically stored routing a setpoint for the output power (K) and the driving force is determined and stored.
    [10]
    10. The method according to claim 9, characterized in that based on the set values for the output power (K) and the driving force for each point of the plug guide a setpoint for the air ratio is determined and stored.
    [11]
    11. The method according to claim 9 or 10, characterized in that the current air ratio of the internal combustion engine is tracked in each point of the routing the stored setpoint of the air ratio. 2010 11 11 Fu / St

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    同族专利:
    公开号 | 公开日
    JP2013543946A|2013-12-09|
    EP2637915B1|2014-01-08|
    EP2637915A1|2013-09-18|
    AT510269B1|2012-03-15|
    US20130282258A1|2013-10-24|
    JP5954879B2|2016-07-20|
    WO2012062785A1|2012-05-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2013167726A2|2012-05-11|2013-11-14|Avl List Gmbh|Vehicle, in particular racing vehicle|US1760682A|1925-04-22|1930-05-27|Boysen Friedrich August|Collecting conduit for the exhaust pipes or internal-combustion engines|
    US2230666A|1937-12-01|1941-02-04|Firm J Eberspacher|Exhaust gas collector|
    US4240395A|1978-08-29|1980-12-23|Ford Motor Company|Air/fuel ratio controller|
    JPH0433977B2|1983-04-08|1992-06-04|Nippon Denso Co|
    DE4110750A1|1991-04-03|1992-10-08|Hansbernd Berzheim|Negative lift generator for racing or sports car - applies hydrodynamic paraxodon to exhaust and car underbody|
    DE19505710C2|1994-02-21|2002-10-17|Aisin Takaoka Ltd|exhaust|
    EP0932542B1|1996-10-25|2002-07-31|Georgia Tech Research Corporation|Pneumatic aerodynamic control for cars|
    US5924763A|1997-04-09|1999-07-20|Trac-Tech, Llc|Wing assembly for drag racers|
    WO2008041757A1|2006-09-28|2008-04-10|Yoshiaki Takida|Functional device for automobile|
    US8276375B2|2006-12-12|2012-10-02|Samuel Plough|Downforce-producing exhaust header|
    US20100018192A1|2008-07-24|2010-01-28|Michael Suschik|Exhaust manifold for multi-cylinder engine|AT513886B1|2013-01-22|2014-11-15|Avl List Gmbh|Vehicle, in particular racing vehicle|
    US9688321B2|2015-10-02|2017-06-27|GM Global Technology Operations LLC|Downforce generation system for a vehicle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT0185610A|AT510269B1|2010-11-11|2010-11-11|METHOD FOR THE DEPOSIT GENERATION OF VEHICLES OPERATED BY INTERNAL COMBUSTION ENGINES|AT0185610A| AT510269B1|2010-11-11|2010-11-11|METHOD FOR THE DEPOSIT GENERATION OF VEHICLES OPERATED BY INTERNAL COMBUSTION ENGINES|
    JP2013538173A| JP5954879B2|2010-11-11|2011-11-09|Method for generating downforce in a vehicle driven by an internal combustion engine|
    EP11781790.8A| EP2637915B1|2010-11-11|2011-11-09|Method for generating down force by vehicles operated by internal combustion engines|
    US13/884,957| US20130282258A1|2010-11-11|2011-11-09|Method for generating down force by vehicles operated by internal combustion engines|
    PCT/EP2011/069699| WO2012062785A1|2010-11-11|2011-11-09|Method for generating down force by vehicles operated by internal combustion engines|
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