Control system of internal combustion engine

 

(57) Abstract:

The invention relates to vehicles and in particular to control systems for internal combustion engines a fuel injection and carburetor type, and is intended to prevent unauthorized starting of the engine for theft of the car or other vehicle. The control system includes a disk for installation on the motor shaft, which made the label of the top dead point and at least two additional labels the upper dead point is made symmetrically with respect to the Central axis of the disk, perceiving the sensor in the circuit between the receptive sensor and the control unit sequentially enabled shaper pulses, the processor is equipped with a determinant of eligibility access control system made in the form of electronic lock with dynamic crypted code, and the shaper output pulses. The processor is connected to at least one multiplex bus multiplexer with inputs for service devices, and includes an interface I / o information to the processor through the interface I / o connected to a personal computer with appropriate diagnostic from unauthorized starting of the engine. 5 C.p. f-crystals, 1 Il.

The invention relates to vehicles and more particularly to control systems for internal combustion engine fuel injection and carburetor type, and is intended to prevent unauthorized starting of the engine for theft of the car or other vehicle.

Known control system of an internal combustion engine (see Annex to the application form A. S. USSR 1665056), including the timing disk for installation on the motor shaft, position sensors at the top dead center (TDC) and the angular velocity associated with the control unit. On disk executed only one TDC mark. The system works is similar to the following. Using the starter cause the rotation of the crankshaft of the engine. With the shaft rotating toothed disk and the TDC mark on it. The teeth of the disk interact with sensors that generate Gating pulses and transmit them to the control unit. After coming from the sensor TDC pulse corresponding to the location of the piston at TDC, the control unit starts the program that controls the fuel injection into the combustion chamber.

The disadvantage of analog is the low degree of protection against unauthorized launch the Appendix - A. C. the USSR 1746017) adopted by the authors for the prototype, including the timing disk for installation on the motor shaft, the receiving sensor associated with the control unit. On disk executed only one TDC mark. Working prototype similar to the first one. During the rotation of the crankshaft perceiving sensor generates a corresponding angular position of the shaft of the gate pulses. When interacting TDC mark with the sensor, the latter generates a corresponding electrical pulse, which is recognized by the control unit as a signal coming from the TDC mark. This pulse triggers a corresponding control program.

The disadvantage of the prototype, as well as analogue, is the low degree of protection against unauthorized starting of the engine.

Technical problem arising from the prior art, is to increase the degree of security system engine control from unauthorized starting of the engine.

The task in the invention is solved due to the fact that the engine control system includes a disk for installation on the motor shaft, the receiving sensor associated with the control unit. On disk executed TDC mark corresponding to destitue TDC mark, which is false labels, i.e. they do not correspond to the actual location of the piston at TDC. In the information chain between perceiving the sensor and the control unit sequentially enabled shaper input pulses, the processor and the shaper output pulses. Moreover, the processor is equipped with a qualifier of validity of the access control system.

Does the proposed device as follows. Rotate the crankshaft. Together with the shaft on the disk rotate all three TDC mark: one label authentic - main and two false - optional. When the shaft of the TDC mark generating at the output of the receiving transducer three of the same pulse shape, but are shifted relative to each other in time. If in the inventive control system in the circuit between the sensor and the control unit was not consistently enabled processor and two serving his pulse shapers, all three pulses would fall in the control unit without modification. The latter is not able to distinguish which of the three pulses corresponds to the true label TDC and which are false TDC marks. Therefore, the program control unit fails and it stops the operation of the control system - the engine is not zapuskayet them in the form which is able to receive and process the processor. Processor with authorized access to the control system and the compliance of the pulse shape to his "drive performs the delete operation from a batch scan pulses pulses corresponding false additional marks TDC. Other pulses, including pulses from the true TDC mark, the processor passes through itself to the control unit without modification. After processor impulses before I get into the control unit included in the imaging unit of output pulses, where they transform into a form that can be perceived by the control unit. Once in the control unit, the pulses from the disc launches the corresponding program, which issues control commands to the devices that provide the engine.

In case of unauthorized access to the control system, i.e., when the receiving processor determining eligibility access the appropriate licensing sanctions, the processor blocks the passage through itself any impulses and makes it impossible for a start-up control unit and, therefore, the engine start. In addition, the engine start is impossible when you try to connect perceiving sensor directly to voennoi on one label TDC.

Thus, thanks to the introduction of changes in the structure of the disk and additional control blocks in the information chain between the sensor and the control unit in the inventive device achieves the goal of the project is to increase the degree of protection against unauthorized starting of the engine.

Additional TDC mark is made symmetrically with respect to the Central axis of the disk, which facilitates the processor through their mutual location to determine TDC mark is genuine and what is false. In addition, the symmetrical arrangement of marks on the disk prevents the introduction of imbalance in the rotating mass of the drive if additional TDC mark would be located otherwise.

The processor is connected to at least one multiplex bus multiplexer with inputs for a service device that allows you to use a free operating CPU power for their operation, when the engine is not running.

The processor has an interface I / o information, allowing you to connect directly to the additional service processor device, such as a personal computer with appropriate diagnostisera for adoption by the driver of decisions.

The determinant of eligibility is made in the form of an electronic lock with dynamic crypted code, which further increases the degree of protection against unauthorized starting of the engine due to the fact that multi-digit lock code and, accordingly, the key code is changed in accordance with an individual program for each access to the control system to start the engine.

The invention is new, because it is unknown in the prior art.

The invention involves an inventive step, because it is for the expert is not obvious from the prior art.

The drawing schematically shows a functional block diagram of the inventive device.

The engine control system of a vehicle includes a disk 1 to install on the motor shaft, the corresponding receptive sensor 2 (induction, optoelektronische based on the Hall effect and other) associated with the control unit 3. On the toothed disk 1 is made of three identical TDC mark: primary label 4, corresponding to the actual finding of the piston of the engine at TDC and two axisymmetric label 5, which is the false labels that do not correspond to the real presence of the piston at TDC. In electric zeor 7 and the shaper output pulses 8. Moreover, the processor 7 is equipped with a determinant of eligibility access to the control system 9. The processor 7 is equipped with a multiplex bus 10 from the multiplexer 11 to connect the service device 12 (e.g., shock sensor, sensor scan of the cabin, microwave motion sensor, and others). The processor 7 is equipped with an interface I / o information, allowing you to connect directly to the processor 7 additional service device. For example, a personal computer 13, is equipped with appropriate software to diagnose the condition of the engine, without leaving the cab of the vehicle. The determinant of eligibility access 9 made in the form of electronic lock with dynamic crypted code.

Works claimed the engine management system as follows. Using the starter cause the rotation of the crankshaft of the engine. With the shaft rotating toothed disk 1 and the label of 4.5 on it. Induction sensor 2 interacts with the teeth of the disk 1 and the output produces bipolar continuous sinusoidal electrical impulses. When interacting with the tab cloves sensor 2 forms the top of the sine wave. When interacting with the cavity forms the lower peak of the sinusoid. When were the ith her in the form of an elongated pulse. Next impulse from the sensor 2 reaches the input of the shaper 6, which converts continuous bipolar pulses of the sensor 2 in a discrete unipolar electric pulses of rectangular shape, which is able to accept and process the processor 7.

The CPU 7 operates as follows. When the disk 1 on the motor shaft it is initially installed on the shaft with one label 4 - genuine, the actual position of the piston of the engine. Further, the shaft with the disc 1 crank one full turn. In memory of the processor 7 is written to the standard (traditional) form of disk 1 single label 4. Then in the form of a disk 1 is made of distortion - added two axisymmetric additional labels 5. Then crank shaft with the disc 1 and is recorded in the processor memory 7 a modified form of disc 1. Further, the CPU 7 will only interact with the disk 1. Information from any other disk, i.e. with a different relative positions of the main 4 and additional marks 5 7 processor to process (pass on) will not.

The main task of the processor 7 is to restore the original (normal) form of a disk 1, more precisely to bring the form and the label 4. And to do it only under the condition that the disc 1 is "his", i.e. which has the same mutual positions of the three labels 4, 5 and provided that access to the system authorized by the owner of the car.

Thus, at the output of the processor 7 we have unipolar rectangular pulses, as if they were triggered (initiated) standard disk 1, i.e., the disk 1 with one (original) mark 4. From the output of the processor 7 these pulses arrive at the input of the shaper 8, which converts the discrete unipolar rectangular pulses of the processor 7 in a continuous bipolar sinusoidal pulses, as if they come from induction sensor 2. In this, these pulses arrive at the input of the control unit 3, which generates control pulses for devices that ensure the smooth operation of the engine: spark plugs, fuel pump, etc.

When authorized access to the engine management system it works as follows. Rotate the motor shaft. With him spin labels 4, 5. The sensor 2 outputs a bipolar pulses. Driver 6 converts them into unipolar. Once in the CPU 7, the pulses are converted to a form that corresponds to the disk 1, but with one label 4. Further impel the control 3, which accordingly generates control commands.

When an unauthorized attempt to start the engine control system works differently. Rotate the shaft. The sensor 2 generates the appropriate form of disc 1 pulses, which are received in the imaging unit 6, where they are converted into rectangular pulses which are fed to the input of the processor 7. If the determinant of eligibility access 9 to the processor 7 does not come appropriate permissive signal, or if the CPU 7 determines that the scan pulses coming from the disk 1 does not correspond to the form "your" disk 1 memory processor 7, the latter concludes that there is an unauthorized attempt to start the engine. At this point, the processor 7 does not transmit the next pulse from drive 1 next to the driver 8, respectively to the control unit 3, i.e., blocks the operation of the control system and makes it impossible to start the engine, which increases the degree of protection of the inventive control system from unauthorized starting of the engine, i.e., solved the technical problem. In addition, the engine start is impossible when you try to connect the sensor 2 directly to the control unit 3, since the pulses from the false metapan security system from unauthorized launch.

In addition, multi-digit code for the electronic lock 9 and the return key changes each time you access the control system to start the engine, which also increases the degree of protection of the inventive control system from unauthorized starting of the engine.

Thus, the proposed device meets the criterion of "industrial applicability" because the technical problem arising in the prior art is solved completely.

In addition, when the vehicle is parked and the engine is not running, the CPU 7 can serve additional security systems car: shock sensor, the sensor scan of the cabin, microwave motion sensor, and other poses. 12. The exchange of data between devices 12 and the processor 7 via the multiplex bus 10 and the multiplexer 11. Thanks to better use of the information processor 7, and opportunities of the proposed control system.

In addition, the ability to directly connect to the processor 7, the personal computer 13 allows the driver without leaving the cab of the car, to carry out a complete diagnosis of the engine, turning it to auto services, which also extends Yong prototype of the claimed device. Conducted successful tests. Planned mass production of the claimed device.

1. Control system of internal combustion engine, including a drive to install on the motor shaft, the receiving sensor associated with the control unit, the disk label made the top dead point, wherein the disk is made of at least two additional labels top dead center, and in the circuit between the receptive sensor and the control unit sequentially enabled shaper input pulses, the processor, the shaper output pulses, and the processor is equipped with a qualifier of validity of the access control system.

2. Control system under item 1, characterized in that the additional labels are made symmetrically with respect to the Central axis of the disk.

3. The control system according to p. 1, wherein the processor is associated with at least one multiplexed bus multiplexer with inputs for service devices.

4. Control system under item 1, characterized in that the processor has an interface I / o information.

5. The control system according to p. 4, characterized in that the processor through ptx2">

6. Control system under item 1, characterized in that the determinant of eligibility is made in the form of an electronic lock with dynamic crypted code.

 

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