This document discusses spark advance control systems for internal combustion engines. It introduces spark advance as a fundamental parameter that affects engine performance. It then discusses various fuel saving technologies before focusing on construction, operation, and control of spark advance systems. The purpose of spark advance control is explained, along with causes of incorrect timing, effects on emissions and drivability, and advantages like increased combustion temperature and pressure. Knock control detection and prevention are also covered. Testing of a prototype feedback control system is described along with conclusions and references.
Ignition system of an automobile is one of the most important system, as it gives necessary energy to the fuel for combustion. Depending on the electric energy supplied to the spark plug, ignition system is divided into two main types. They are namely inductive ignition and capacitor discharge ignition (CDI). Both the ignition types perform the same operation, but the difference is supply of electrical energy to the spark plug.
Ignition system of an automobile is one of the most important system, as it gives necessary energy to the fuel for combustion. Depending on the electric energy supplied to the spark plug, ignition system is divided into two main types. They are namely inductive ignition and capacitor discharge ignition (CDI). Both the ignition types perform the same operation, but the difference is supply of electrical energy to the spark plug.
How a spark distribute in a vehicle?, Ignition system working, Ignition system diagram, functioning, component, primary circuit, secondary circuit,ignition coil diagram, contact point system etc
Automotive Systems course (Module 09) - Ignition Systems for Internal Combus...Mário Alves
This presentation is dedicated to ignition systems for Internal Combustion Engines (ICE). The Ignition System is paramount for every car, motorcycle, truck or bus that runs an ICE based on gasoline, alcohol or Liquefied Petroleum Gas (LPG). It controls the timings when the spark plugs are fired, therefore igniting the air-fuel mixture in the combustion chamber. The Ignition System is one of the major players in what concerns the performance of the engine in terms of output power, pollutant emissions and fuel consumption.
Test Rig for Measurement of Spark Advance Angle and Ignition System Using AT8...IJSRD
An electronic ignition control system for internal combustion engine, notably for motor vehicles, which comprises a rotary member revolving at engine speed and provided with two reference marks Which the position correspond to the maximum ignition advance angle and to the minimum ignition advance angle, respectively , said reference marks defining at least one area on said rotary member, a sensor disposed in close vicinity of said rotary member so as to detect the moments of passage of said references marks and at least one up and down counter for counting pulse, said rotary member further comprising a third references marks separate from the first two reference marks aforesaid so as to define two successive areas scanned in succession by said sensor, while a first up and down counter positively counts the pulse from a first area and negatively counts, during passage of second area the pulse from second clock system adapted to emit pluses at a frequency programmable according to the desired ignition advance law, the resetting of said up and down counter being utilized for producing ignition spark. Finally up and down counter calculates the final value of the advance angle. After calculating the final value of advance angle signal send to the ignition box to ignition coil, and ignition coil operate the spark as per advance angle.
Developing a new generation of energy efficiency products for reciprocating e...Bowman Power
Learn how a new energy efficiency product gets made, from opportunity to concept, design, validation and production, with this free presentation from the 73rd Indonesia National Electricity Day & POWER-GEN Asia. #PGASIA
How to Start your Large Motors- typical Solutions or new motor design?Delcho Penkov
In the context of low oil prices and an increasing demand for cost reduction of the electrical installations, optimizing the starting solution of high power electrical motors could be highly contributive. Direct on-line start is the most common solution today, being also the simplest and most cost-effective but it may generate voltage dip during start and stresses mechanically the machine and load. Progressive starting solutions, as auto-transformer, soft-starter or variable speed drive, solve the electrical and mechanical constraints in variable levels, related to their complexity. Today, in addition to the progressive starting solutions, motor manufacturers propose to design the motors as to reduce their inrush current, in some cases down to 300% of the rated current.
In this tutorial different solutions for large motor starting will be explored and compared, with respect to their application field, flexibility of adaptation, complexity during installation and set-up, overall performances and technical and economical aspects. Some guidelines for selection will be also discussed. In the scope of analyses are traditional methods, such as direct on-line, auto-transformer, soft-starter and variable speed drive and also recent solutions as motors designed with reduced inrush current.
An introduction to the concept of Cam-Less engines which replaces the conventional Cam and follower assembly with Electro -Mechanical or Electro-Hydraulic actuators controlled by PDM and ECU for better control and improving efficiency of an I.C.Engine.A theoretically simple but practically complex kit of technology which although beneficiary has its limitations and comes with a huge development and production cost.For better insight search for the same on Youtube.
https://youtu.be/XrYt1JHNmh4
An interesting take on this.
Electronically controlled gasoline injection system for SI engines, Electronically controlled diesel injection system (Unit injector system, Rotary distributor type and common rail direct injection system), Electronic ignition system (Transistorized coil ignition system, capacitive discharge ignition system), Turbo chargers (WGT, VGT), Engine emission control by three way catalytic converter system, Emission norms (Euro and BS).
The turbo expander compressor are used to achieve cryogenic temperature by reducing the enthalpy of high pressure gas in refrigeration cycles of Oil and gas, Refining and Petrochemical Process. These slides covers the working process of Expander compressor, process applications of expander compressor, Preliminary sizing calculations, Auxiliaries associated with Expander compressor mainly focusing on Active magnetic bearing equipment and its control system.
2. Introduction
• the fuel saving technologies range from variable compression
ratio, to downsizing and turbo charging
• fuel saving technologies range from variable compression
ratio
• one of the most important parameter affecting engine
performances is spark advance
• fundamental parameter is controlled in open loop
3. Abbreviations and symbols
• BDC bottom dead centre
• SA spark advance
• BTDC before top dead center
• RMS root mean square
• CA crank angle
• SNR signal to noise ratio
• DAQ data acquisition
• QP pilot quantity
• ECU electronic control unit
• TDC top dead centre
• IGBT insulated gate bipolar transistor
• TTL transistor to transistor logic
• IR infra-red
• WOT wide open throttle
• P-P peak to peak
6. Knock control
• detect the knocking signal and to control the
ignition timing to prevent the knocking
• detect a stable knocking signal avoiding the
affect of the various environmental changes
and variations of the circuit
7.
8. Realization of the spark timing
control system
• feedback control of spark advance on a four cylinder series
production engine
• set up and test a system capable to take the spark timing
control of a modern engine
• the ignition principle and process and of the hardware
requirements and troubles
• heat up a local portion of mixture to make it reach the auto-
ignition temperature
• the ignition must be properly timed with respect to the piston
movement
9. Causes of incorrect spark timing
•On systems that use the ECM to compute
ignition spark advance
•Emissions and drivability concerns quick
check of initial ignition timing
•Engine load miscalculated so incorrect input
signals
10. Purpose of spark advance control
system
• spark advance increases with higher engine
speeds for performance and fuel economy
• spark advance needs to decrease under heavy
load conditions to avoid detonation
11. Effects of spark advance on emissivity
and drivability
• Too much spark advance – during high engine
load
• Too little spark advance – causes only partial
combustion of the air
13. CONCLUSION
• composed of two bipolar transistors
designed for automotive ignition
• tested on a test bench equipped with an eddy
current dynamometer
• Increases engine efficiency
14. REFERENCE
• Gregg W. Pestana, 1989, “Engine Control Methods Using
Combustion Pressure Feedback”, Sae Paper 890758
• Bosch, 2000, “Automotive Handbook”, Sae Claus Preuschoff, 2001,
“Smart Igbt For Advanced Ignition Systems”, Sae Paper 2001-01-
1220
• Kaneyasu M., Kurihara N., Katogi K., Tabuchi K.., 1995, “An
Advanced Engine Knock Detection Module Performs Higher
Accurate Mbt Control And Fuel Consumption Improvement”, 8th
International Conference On
• Solid-State Sensors And Actuators. Volume 1 Dale J.D., Checkel M.
D., Smy P. R., 1997, “Application Of High Energy Ignition Systems
To Engines”, Progress In Energy And Combustion Science, Vol.23,
Pp 379-398
