Design of engine assembly mounting directly affects design level of complete vehicle performance. As a result of that development of mounting and engine assembly matching technology is of vital importance. Integrating system simulation technique and test technique into one, this technique is capable of forecasting engine assembly mounting system performance on systematical level. System modal frequency and system modal vibration mode analysis, optimal analysis of mounting position and rigidity parameters, as well as loading analgsis in each gear shifting operating mode can be carried out.

"The performance simulation computing program of complete vehicle" is a group of complete computing program self developed by complete vehicle research department for forecasting power ability, economy, stability, harshness and braking performance of complete vehicle. Based on different performance characristics of the complete vehicle or using a big mature software or solving and coding of mastered theory knowledge and test data, the program makes an active effort on the theory research and the test result practice.

Diesel Engine Electronic Controled Governor

Diesel engine electronic controled governor is a scientific research achievement of "Diesel Engine Electronic Controled System Development" which is a key research topic of State Scientific & Technological Commission in the "9th Five-Year-Plan". Its main feature is to replace traditional mechanical governor with electrical actuator, different temperature sensors, displacement sensors, revolution sensors, electrical control unit (ECU) as well diesel engine control software, thus considerably improving regulate & control quality of fuel injection pump. It has the following advantages as flexible emission control, free setting of governing characteristic in stable and transitional state as well as constant engine revolution control.

Project Management

Project Management Program developed by the R&D Center uses network data base as storage center of all information relevant to tasks, all departments work altogether to serve this data base. All relevant information in the process of task planning and implementation will be submitted to relevant departments timly and conveniently, thus all departments can be done their jobs in a coordinated fashion and improve theit work efficiency.

Development of Engine Gas Port

R&D Center currently uses 3-D technology to develop engine port, while at the same time it makes full use of advanced processing method, e.g. laser moulding, numerical-control machining to make port sample and blowing box. All mechanical movement of constant air flow port test bench has been automized, and test equipment has been modularized. All data measured in tests will be collected by sensors and processed by computers, thus greatly improve work efficiency, accuracy and comparability of test data are thus improved. Applying CFD technology can help to keep abreast of distribution of flow field in the port, and is helpful to upgrading port design development level.

Speedometer Signal Fitting Device

Speedometer signal processor uses monolithic processor to process vehicle speed signal collected from gear box by means of frequency division, its frequency division multiple: P=1+0.02N (N=0~255). As a result, when freqncy division multiple of signal processor is between 1.5~6.6, it is set freely by microswitch which changes frequency division multiple of the signal processor, as a result, it can adapt to variation of different rear axle transmission ratio and different tyre rolling radius, thus reducing varieties of gear box. At the same time cutting costs (lower cost approx.RMB9 yuan per vehicle), this also offers convenience both in production and maintenance.

ABS+EDS

ABS(anti-blocking system), EBU(electronic braking force distribution unit) and EDS (electronic differential lock) are installed on Hongqi Car which integrates the three active safety systems into one, this layout reduces vehicle weight and improves reliability of the system. In the process of braking, ABS system adjusts brake oil pressure automatically to prevent wheel blocking, thus obtaining optimized braking effect.

Application of CFD in Engine Developing

By using CFD to analyze pressure difference at inlet and outlet of engine cooling water jacket and flow rate, flow amount and heat transfer coefficient in different positions, the technicians can compare different design schemes in the design phase and carry out optimation design; Using CFD to analyze pressure distribution in the flow field of air passage, speed distribution , flow coefficient and vortex ratio in flow field in engine gas port can provide guidance and help in engine gas port design and development.

    Through this research, technicians of the R&D Center get CAE integral analysis technology of cylinder block, cylinder gasket, cylinder head which is applied in projects conforming to Euro II emission standard of CA6110 diesel engine.