CN101359227A

CN101359227A - Simulator for demarcating ECU

Info

Publication number: CN101359227A
Application number: CNA2008101195270A
Authority: CN
Inventors: 张幽彤; 李建纯; 黄国钧; 张伟照
Original assignee: Beijing Institute of Technology BIT
Current assignee: Beijing Institute of Technology BIT
Priority date: 2008-09-02
Filing date: 2008-09-02
Publication date: 2009-02-04

Abstract

The invention discloses an ECU calibration simulator, comprising a sensor signal simulation module, a selection module, a signal processing module, a communication module and a display module. The sensor signal simulation module is used to generate various analog signals of a diesel engine and is responsible for outputting the obtained rotating speed analog signal, and the pressure and temperature analog signals inputted by the selection module into the display module through the communication module; the selection module selects the signals outputted by the sensor signal simulation module; and the signal processing module processes the signals inputted by the selection module so as to carry out the engine calibration. The communication module is responsible for the signal communication between the signal processing module and the display module. The display module displays the signals transmitted from the communication module so as to understand the state of diesel engine and facilitate the calibration. The invention provides a basic guarantee for the electronically controlled diesel engine to carry out reasonable dynamic calibration and abandons the dedicated test-bed tools to achieve rapid diesel engine common-rail ECU calibration, improve the efficiency and reduce the costs.

Description

A kind of ECU simulator for demarcating

Technical field:

The present invention relates to a kind of ECU simulator for demarcating, belong to field of electric control.

Background technology:

Along with the enforcement of China state three diesel emission rules, and to vehicle energy saving environmental requirement increasingly stringent, the automatically controlled requirement of motor car engine is more and more accurate.Yet to Engine ECU to demarcate difficulty very big, the staking-out work amount is also very big, the control algolithm software of ECU inside is fixed for certain concrete control engine that is subjected to, these algorithms have comprised control strategy and OBD strategy, about 4000 to 7000 free parameters (monodrome parameter, two-dimentional form and three-dimensional chart etc.), different engines, different these parameters of vehicle are all needed to adjust optimization, so staking-out work still is a repetition and drops into very big process.General electronic controlled diesel is demarcated and is used special-purpose testing table instrument to carry out, and all is great waste to financial resources and time.Invent the engine calibration simulator based on this, do not seen relevant report at present both at home and abroad as yet.

Summary of the invention:

The objective of the invention is to have invented a kind of ECU simulator for demarcating, can realize quick demarcation, improved efficient, reduced cost common rail for diesel engine ECU.

A kind of ECU simulator for demarcating comprises the sensor signal analog module, selects module, signal processing module, communication module and display module.The sensor signal analog module links to each other with signal processing module and Engine ECU by selecting module, and signal processing module links to each other with Engine ECU, and links to each other with display module by communication module.

The sensor signal analog module is made of temperature simulation module, pressure simulation module and tacho-pulse analog module in order to produce the various simulating signals of diesel engine, is respectively applied for the temperature, pressure and the tacho-pulse simulating signal that produce diesel engine.Wherein the temperature simulation module comprises water temperature ASM, fuel oil temperature ASM, intake air temperature ASM and oil temperature ASM, respectively in order to produce the simulating signal of water temperature, fuel oil temperature, intake air temperature and oil temperature; The pressure simulation module comprises fuel pressure analog module, admission pressure analog module and engine oil pressure analog module, respectively in order to produce the simulating signal of fuel pressure, admission pressure and engine oil pressure; The tacho-pulse analog module is in order to produce the simulating signal of diesel engine speed pulse.

Select module that the signal of sensor signal analog module output is selected, with wherein the temperature simulation module and the signal input Engine ECU of pressure simulation module, and with all signal input signal processing modules.

Signal processing module is to being handled by the signal of selecting the module input, the signal of tacho-pulse analog module wherein is through handling, obtain the simulation tach signal of diesel engine, signal processing module is with this signal input Engine ECU, Engine ECU is selected the temperature and pressure simulating signal of the engine of module input in conjunction with the front, thereby carries out engine calibration.Signal processing module also is responsible for the rotating speed simulating signal that will obtain and is selected the display module of the pressure and temperature simulating signal of module input by communication module output.

Communication module is responsible for the signal and communication of signal processing module and display module.

Display module shows the signal of the signal processing module that transmitted by communication module, and then the running status simulating signal of diesel engine is shown, so that understand the state of diesel engine, conveniently demarcates.

Beneficial effect:

A kind of ECU simulator for demarcating provides basic guarantee for electronic controlled diesel carries out rational dynamic calibration, has abandoned special-purpose testing table instrument with regard to realizing the quick demarcation to common rail for diesel engine ECU, has improved efficient, has reduced cost.

Description of drawings:

Fig. 1 is the system construction drawing of ECU simulator for demarcating.

Specific embodiments:

Carrying out the ECU timing signal, each sensor states simulating signal of at first given diesel engine, i.e. each signal of sensor signal analog module specifically comprises each signal of temperature simulation module, pressure simulation module, tacho-pulse analog module and each submodule thereof.Like this, the water temperature of diesel engine, fuel oil temperature, intake air temperature, oil temperature, fuel pressure, admission pressure, engine oil pressure, tacho-pulse just can obtain by simulation.

The simulating signal of each sensor signal that obtains is input to be selected in the module, and at this moment, other simulating signals except that the tacho-pulse simulating signal are input to Engine ECU by selecting signal, demarcate so that prepare.The simulating signal of all sensor signals is input to signal processing module by selecting module.

Signal processing module is handled the signal of selecting the module input, and tacho-pulse simulating signal wherein obtains the rotating speed of diesel engine through after the processing of signal processing module.This rotating speed and other sensor die analog signal are input in the display module through communication module, and display module just demonstrates each state of diesel engine operation, compares to make things convenient for timing signal.

Claims

1, a kind of ECU simulator for demarcating comprises the sensor signal analog module, selects module, signal processing module, communication module and display module; It is characterized in that: the sensor signal analog module links to each other with signal processing module and Engine ECU by selecting module, and signal processing module links to each other with Engine ECU, and links to each other with display module by communication module;

The sensor signal analog module is made of temperature simulation module, pressure simulation module and tacho-pulse analog module in order to produce the various simulating signals of diesel engine, is respectively applied for the temperature, pressure and the tacho-pulse simulating signal that produce diesel engine; Wherein the temperature simulation module comprises water temperature ASM, fuel oil temperature ASM, intake air temperature ASM and oil temperature ASM, respectively in order to produce the simulating signal of water temperature, fuel oil temperature, intake air temperature and oil temperature; The pressure simulation module comprises fuel pressure analog module, admission pressure analog module and engine oil pressure analog module, respectively in order to produce the simulating signal of fuel pressure, admission pressure and engine oil pressure; The tacho-pulse analog module is in order to produce the simulating signal of diesel engine speed pulse;

Select module that the signal of sensor signal analog module output is selected, with wherein the temperature simulation module and the signal input Engine ECU of pressure simulation module, and with all signal input signal processing modules;

Signal processing module is to being handled by the signal of selecting the module input, the signal of tacho-pulse analog module wherein is through handling, obtain the simulation tach signal of diesel engine, signal processing module is with this signal input Engine ECU, Engine ECU is selected the temperature and pressure simulating signal of the engine of module input in conjunction with the front, thereby carries out engine calibration; Signal processing module also is responsible for the rotating speed simulating signal that will obtain and is selected the display module of the pressure and temperature simulating signal of module input by communication module output;

Communication module is responsible for the signal and communication of signal processing module and display module;