The Development and Application of the Basic Functions of the EMS of Four-Cylinder Gasoline Engine

2012 ◽  
Vol 605-607 ◽  
pp. 2083-2086
Author(s):  
Ya Jun He ◽  
Yang Wang ◽  
Fei Yu Song ◽  
Bin Hong ◽  
Xiao Long Li
Keyword(s):  
Gasoline Engine ◽  
Treatment Plan ◽  
Control Program ◽  
Intake Manifold ◽  
Main Function ◽  
Position Signal ◽  
Function Modules ◽  
Program Flow ◽  
Valve Position ◽  
Intake Manifold Pressure

Introduced the MCU STM8S105C4’s basic framework,main function modules and corresponding technical parameters.Based on this MCU, With the crankshaft signal and camshaft signal, the throttle valve position signal, intake manifold pressure signal, and other signals for the treatment plan,the injection control and ignition control,we developed a corresponding control program flow charts and software implementation,to make sure the control of the four-cylinder gasoline engine’s operation correct. Simulation results show that,the design of the control system reach the expected goals,that makes the gasoline engine start and running steadily.

scholarly journals Design of nonlinear hierarchical controller for intake manifold pressure and boost pressure of turbocharged gasoline engine

2020 ◽  
Vol 82 (1/2/3/4) ◽  
pp. 161
Author(s):  
Yunfeng Hu ◽  
Yaohan Wang ◽  
Jinwu Gao ◽  
Xun Gong ◽  
Zhiguo Tang ◽  
...  
Keyword(s):  
Gasoline Engine ◽  
Intake Manifold ◽  
Boost Pressure ◽  
Intake Manifold Pressure

scholarly journals Design of nonlinear hierarchical controller for intake manifold pressure and boost pressure of turbocharged gasoline engine

2020 ◽  
Vol 82 (1/2/3/4) ◽  
pp. 161
Author(s):  
Yunfeng Hu ◽  
Yaohan Wang ◽  
Jinghua Zhao ◽  
Zhiguo Tang ◽  
Xun Gong ◽  
...  
Keyword(s):  
Gasoline Engine ◽  
Intake Manifold ◽  
Boost Pressure ◽  
Intake Manifold Pressure

The Research of Lean Combustion Characteristic of Compound Injection System of Direct Injection Engine

2014 ◽  
Vol 532 ◽  
pp. 362-366 ◽  
Author(s):  
Jiang Feng Mou ◽  
Rui Qing Chen ◽  
Yi Wei Lu
Keyword(s):  
Gasoline Engine ◽  
Direct Injection ◽  
Injection System ◽  
Intake Manifold ◽  
Combustion Characteristic ◽  
Injection Timing ◽  
Mixed Gas ◽  
Lean Burn ◽  
Direct Injection Engine ◽  
Lean Combustion

This paper studies the lean burn limit characteristic of the compound injection system of the direct-injection gasoline engine. The low pressure nozzle on the intake manifold can achieve quality homogeneous lean mixture, and the direct injection in the cylinder can realized the dense mixture gas near the spark plug. By adjusting the two injection timing and injection quantity, and a strong intake tumble flow with special shaped combustion chamber, it can produces the reverse tumble to form different hierarchical levels of mixed gas in the cylinder. Experimental results show: the compound combustion system to the original direct-injection engine lean burn limit raise 1.8-2.5 AFR unit.

KW Level Wind Turbine Wind Tracking and Yaw System

2011 ◽  
Vol 148-149 ◽  
pp. 97-100
Author(s):  
Xu Gang Wang ◽  
Guang Qi Cao ◽  
Zhi Guang Guan ◽  
Zu Yu Zhao
Keyword(s):  
Wind Turbine ◽  
Wind Power ◽  
Fossil Fuels ◽  
Control Strategies ◽  
Low Cost ◽  
Control Program ◽  
Clean Energy ◽  
New Energy ◽  
Program Flow ◽  
And Control

Wind power is an important direction of new energy, which has no pollution, no consuming fossil fuels, and no producing waste, which is widely used at this stage of clean energy. The small stand alone wind power has been paid more and more attention due to its low cost, flexible installation, strong adaptability. This paper introduces the mechanical and electrical structure, which are used in KW level stand alone mode wind turbine automatically track and yaw system. The motion rules and control strategies of the tracking and yaw system are discussed and then the control program flow is provided. The PIC16F873 chip is used as controller for this part in this system. It can fully meet the design requirements, which will reduce costs and increase the system's control ability. This system can automatically track and yaw, according to the wind direction and wind power.

Preview control of engine intake manifold pressure

2020 ◽  
Author(s):  
Evgeny Shulga ◽  
Patrick Lanusse ◽  
Tudor-Bogdan Airimitoaie ◽  
Stephane Maurel ◽  
Arnaud Trutet
Keyword(s):  
Intake Manifold ◽  
Preview Control ◽  
Intake Manifold Pressure

scholarly journals Learning reference governor for cycle-to-cycle combustion control with misfire avoidance in spark-ignition engines at high exhaust gas recirculation–diluted conditions

2020 ◽  
Vol 21 (10) ◽  
pp. 1819-1834
Author(s):  
Bryan P Maldonado ◽  
Nan Li ◽  
Ilya Kolmanovsky ◽  
Anna G Stefanopoulou
Keyword(s):  
Combustion Process ◽  
Exhaust Gas Recirculation ◽  
Operating Conditions ◽  
Intake Manifold ◽  
Exhaust Gas ◽  
Model Free ◽  
Recirculation Rate ◽  
Valve Position ◽  
Gas Recirculation ◽  
Reference Governor

Cycle-to-cycle feedback control is employed to achieve optimal combustion phasing while maintaining high levels of exhaust gas recirculation by adjusting the spark advance and the exhaust gas recirculation valve position. The control development is based on a control-oriented model that captures the effects of throttle position, exhaust gas recirculation valve position, and spark timing on the combustion phasing. Under the assumption that in-cylinder pressure information is available, an adaptive extended Kalman filter approach is used to estimate the exhaust gas recirculation rate into the intake manifold based on combustion phasing measurements. The estimation algorithm is adaptive since the cycle-to-cycle combustion variability (output covariance) is not known a priori and changes with operating conditions. A linear quadratic regulator controller is designed to maintain optimal combustion phasing while maximizing exhaust gas recirculation levels during load transients coming from throttle tip-in and tip-out commands from the driver. During throttle tip-outs, however, a combination of a high exhaust gas recirculation rate and an overly advanced spark, product of the dynamic response of the system, generates a sequence of misfire events. In this work, an explicit reference governor is used as an add-on scheme to the closed-loop system in order to avoid the violation of the misfire limit. The reference governor is enhanced with model-free learning which enables it to avoid misfires after a learning phase. Experimental results are reported which illustrate the potential of the proposed control strategy for achieving an optimal combustion process during highly diluted conditions for improving fuel efficiency.

Model-based compressor surge avoidance algorithm for internal combustion engines utilizing cylinder deactivation during motoring conditions

2019 ◽  
pp. 146808741988347
Author(s):  
Alexander H Taylor ◽  
Troy E Odstrcil ◽  
Aswin K Ramesh ◽  
Gregory M Shaver ◽  
Edward Koeberlein ◽  
...  
Keyword(s):  
Internal Combustion Engines ◽  
Intake Manifold ◽  
Combustion Engines ◽  
Engine Exhaust ◽  
Engine Operation ◽  
Aftertreatment System ◽  
Cylinder Deactivation ◽  
Valve Motion ◽  
Compressor Surge ◽  
Intake Manifold Pressure

Cylinder deactivation is an efficient strategy for diesel engine exhaust aftertreatment thermal management. Temperatures in excess of 200 °C are necessary for peak NO x conversion efficiency of the aftertreatment system. However, during non-fired engine operation, known as motoring, conventional diesel engines pump low-temperature air through the aftertreatment system. One strategy to mitigate this is to deactivate valve motion during engine motoring. There is a specific condition where care must be taken to avoid compressor surge during the onset of valve deactivated motoring when following high load operation. This study proposes and validates an algorithm which (1) predicts the intake manifold pressure increase instigated while transitioning into cylinder deactivation during motoring, (2) estimates future mass air flow, and (3) avoids compressor surge by implementing staged cylinder deactivation during the onset of engine motoring operation.

A phrenic nerve-actuated electronically controlled positive-pressure ventilator

1987 ◽  
Vol 62 (5) ◽  
pp. 2121-2125 ◽  
Author(s):  
E. R. Schertel ◽  
D. A. Schneider ◽  
D. L. Howard ◽  
J. F. Green
Keyword(s):  
Moving Average ◽  
Inspiratory Flow ◽  
Positive Pressure ◽  
Feedback Signal ◽  
Position Signal ◽  
Tracheal Pressure ◽  
Valve Position ◽  
Air Valve ◽  
The Difference ◽  
Operational Modes

We have constructed an electronically controlled positive-pressure ventilator actuated by phrenic neural activity for use in open-chested or paralyzed experimental animals for the study of breathing pattern. A Bird Mark 14 positive-pressure ventilator was modified such that flow is a linear function of a command signal. Flow is delivered by advancing an air valve with a servo-motor that is controlled by one of three different operational modes. In two of the modes, the difference between the electronic average of inspiratory phrenic activity (moving average) and a feedback signal determines the inspiratory flow. The feedback signal is derived from either tracheal pressure or an electronic measure of inspired volume. In the third mode, the moving average is differentiated to provide control of inspiratory flow and volume. Physiological flow profiles were created using all three operational modes. Integration of an air-valve position signal provides an electronic measure of tidal volume. An additional feature of this ventilator allows inspiratory flow and duration to be predetermined for a given breath.

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