The development of an electronic control system for diesel–natural gas dual-fuel engine

2018 ◽  
Vol 232 (4) ◽  
pp. 473-480
Author(s):  
Youyao Fu ◽  
Bing Xiao
Keyword(s):  
Control System ◽  
Natural Gas ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Mode Switching ◽  
Dual Fuel ◽  
Electronic Control ◽  
Engine Operation ◽  
Electronic Control System ◽  
Diesel Nozzle

To meet the actual application requirements for the diesel–natural gas dual-fuel engine refit, a new electronic control system for the dual-fuel engine is developed in the study. Specifically, an active mode switching board is developed to achieve flexible switching between the pure diesel mode and dual-fuel mode. A diesel nozzle physical simulator is developed to ensure that the original diesel electronic control unit does not trigger fault alarm when engine works in the dual-fuel mode. Moreover, a dual-fuel electronic control unit, which uses the high-speed and multicore TMS320F28M35 as its microcontroller unit, is additionally developed on the basis of the original diesel electronic control unit. The peak and hold current shape for the diesel nozzle is intelligently controlled by the software program in C2000 core. Experiments reveal that the developed electronic control system can select a proper working mode according to the engine operation condition and smoothly switch the working mode without any fault alarms.

Reaserch on an Electronic Control System of CNG/Diesel Dual Fuel Engine

2013 ◽  
Vol 325-326 ◽  
pp. 1176-1179
Author(s):  
Xiao Ning Lv ◽  
Jiang Tao Qin ◽  
Jing Bo Li ◽  
Bo Wen Zou ◽  
Fu Qiang Luo
Keyword(s):  
Substitution Rate ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Dual Fuel ◽  
Electronic Control ◽  
Experiment Data ◽  
Common Rail System ◽  
Controlled System ◽  
Electronic Control System ◽  
Operation Cost

In order to convert the high pressure common rail system engine to CNG/Diesel dual fuel engine, an electronically controlled system is developed. The system includes a CNG fuel supply system, the CNG electronic control unit (ECU) and its matching harness etc. During starting and idle load conditions, the engine runs under pure diesel mode, when the speed and load reached a certain set point, the diesel ECU reduces the pilot diesel quantity, meanwhile, the CNG ECU increases the natural gas quantity, then the engine runs under dual fuel mode. The engine experiment data show that in different conditions, the highest substitution rate is 90% and the average substitution rate is 83%; the average savings ratio of operation cost per hour is 26%.

scholarly journals Software Algorithm Synthesis for Diesel Electronic Control Unit

2018 ◽  
Vol 55 (3) ◽  
pp. 16-26
Author(s):  
A. Prohorenko ◽  
P. Dumenko
Keyword(s):  
Control System ◽  
Diesel Engine ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Electronic Control ◽  
Small Companies ◽  
Significant Progress ◽  
Electronic Control System ◽  
Technological Level ◽  
Engine Construction

Abstract Nowadays global engine construction gets significant progress at a technological level, but specified manufacturers do not release any information about the composition, the structure of the algorithms and the software used by their equipment. It is possible to obtain information only fragmentary and, for example, the description of the electronic control unit algorithm is completely missing. This is a barrier for small companies to improve and adjust existing engines for specific purposes. The present paper describes and develops algorithm synthesis for an electronic diesel engine regulator. Mathe-matical modelling of the automatic control system has been carried out within the framework of the research. The results of the research have demonstrated the efficiency and sustainability of automatic electronic control system using the proposed algorithm.

Researches on Electronic Control System of Diesel-CNG Dual Fuel Engine

2013 ◽  
Vol 860-863 ◽  
pp. 1754-1760
Author(s):  
Lei Yu ◽  
Qing Yang ◽  
You Tong Zhang
Keyword(s):  
Control System ◽  
Diesel Engine ◽  
Natural Gas ◽  
Control Strategy ◽  
Control Strategies ◽  
Dual Fuel ◽  
Engine Fuel ◽  
Electronic Control ◽  
Present Contribution ◽  
Electronic Control System

Natural gas has been one of the most important kinds of vehicle fuel since the discovery of abundant shale gas storage. Operating costs of diesel engine can be reduced by replacing diesel with diesel-CNG dual fuel. The present contribution is mainly about the electronic control system of diesel-CNG dual fuel engine. Hardware and software of the electronic control system were designed. Two control strategies named equivalent power control strategy and diesel-saving control strategy were put forward for different control targets. Furthermore, these two strategies were testified by experiments conducted on engine test bench. Results show that average natural gas replacement could up to 70%. Comparing with diesel engine, fuel consumption of diesel-CNG dual fuel engine can be reduced significantly and the power increases slightly also. Both power and economy performances of the engine are improved.

scholarly journals Electronic control unit development and emissions evaluation for hydrogen–diesel dual-fuel engines

2018 ◽  
Vol 10 (12) ◽  
pp. 168781401881407
Author(s):  
Yasin Karagöz ◽  
Majid Mohammad Sadeghi
Keyword(s):  
Diesel Engines ◽  
Working Condition ◽  
Electronic Control Unit ◽  
Control Unit ◽  
Dual Fuel ◽  
Hydrogen Energy ◽  
Compression Ignition ◽  
Electronic Control ◽  
Fuel System ◽  
Compression Ignition Engines

In this study, it was aimed to operate today’s compression ignition engines easily in dual-fuel mode with a developed electronic control unit. Especially, diesel engines with mechanical fuel system can be easily converted to common-rail fuel system with a developed electronic control unit. Also, with this developed electronic control unit, old technology compression ignition engines can be turned into dual-fuel mode easily. Thus, thanks to the flexibility of engine maps to be loaded into the electronic control unit, diesel engines can conveniently be operated with alternative gas fuels and diesel dual fuel. In particular, hydrogen, an alternative, environmentally friendly, and clean gas fuel, can easily be used with diesel engines by pilot spraying. Software and hardware development of electronic control unit are made, in order to operate a diesel engine with diesel+hydrogen dual fuel. Finally, developed electronic control unit was reviewed on 1500 r/min stable engine speed on different hydrogen energy rates (0%, 15%, 30%, and 45% hydrogen) according to thermic efficiency and emissions (CO, total unburned hydrocarbons, NOx, and smoke), and apart from NOx emissions, a significant improvement has been obtained. There was no increased NOx emission on 15% hydrogen working condition; however, on 45% hydrogen working condition, a dramatic increase arose.

Automated Solid Set Canopy Delivery System for Large-Scale Spray Applications in Perennial Specialty Crops

2019 ◽  
Vol 62 (3) ◽  
pp. 585-592 ◽  
Author(s):  
Rakesh Ranjan ◽  
Guobin Shi ◽  
Rajeev Sinha ◽  
Lav R. Khot ◽  
Gwen-Alyn Hoheisel ◽  
...  
Keyword(s):  
Control System ◽  
Wireless Communication ◽  
Delivery System ◽  
Control Unit ◽  
Electronic Control ◽  
Spray Application ◽  
Electronic Control System ◽  
Spray Control ◽  
Spray Applications ◽  
Valve Actuation

Abstract. A solid set canopy delivery system (SSCDS) has the potential to be an efficient spraying technique because it minimizes chemical drift and allows timely spray applications even under adverse field conditions. A conventional SSCDS, working as a hydraulic spraying system, is controlled manually. Such operation makes it labor and time intensive for spray application in larger orchards. Therefore, a new hardware and software design was implemented in this project for field-level automation of a conventional SSCDS. An electronic control system (ECS) and a spray control unit (SCU) were developed and integrated with an improvised conventional SSCDS. A graphical user interface (GUI) was developed to provide user inputs to the ECS for valve actuation-based decision making. The SCU consisted of a microcontroller, a relay board, and a radio frequency (RF) module assisting in actuation of the solenoid valves in the desired sequence with commands from the ECS. Integrated RF trans-receiver modules facilitated closed-loop wireless communication between the ECS and SCU. This technical note elaborates on the successful integration of the hardware and software to achieve SSCDS automation and functionality, as well as the performance evaluation in a vineyard. The results confirmed the envisioned triggering sequence and solenoid valve actuation for different operating stages of the SSCDS over 120 m loop length. Moreover, the automated SSCDS had no significant differences in spray volume or pressure along the loop up to 82 m. Overall, the proposed integration will aid in automating SSCDS-based spray operation for larger orchards. To validate such a setup, further studies are planned for a centrally located control station and spraying several adjacent plots at a time. Keywords: Agricultural automation, Electronic control system, Precision spray application, Solid set canopy delivery, Spray control unit, Wireless communication.

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