Modern powerless misfire with computer management allows not only to avoid disruption of the engine operation, but also to achieve significant fuel savings. What is the difference between "contactless" and "electronic"?
What is the difference between "contactless" and "electronic"?
Incontact, or analog ignition, has appeared much earlier than electronic as a kind of superstructure over the traditional contact-ignition system. The most unreliable part of the traditional ignition was a complex mechanical breaker, following the movement of the knee and, respectively, the position of the piston in cylinders. With the development of electronic components, it was possible to organize the tricking of the engine with a pulsed sensor, more commonly known as the "Hall Sensor".
The electronic ignition sets from VAZ 2108 were so popular that not only the owners of the "classics" were installed, but also the owners of Volga, Moscovites and even the Zaporozhtzi
With the advent of affordable microprocessors in the mid-1980s, developers were able to get rid of mechanical elements in the ignition system. The main advantages of the microprocessor system are that it provides not only automated, but also optimized ignition control, depending on a number of sensor parameters. This is the speed of the crankshaft, inlet manifold pressure, coolant temperature, throttle position. Thanks to the electronic switches, it was possible to get rid not only of the movable components, but also of the non-tightly adjacent contacts, which means to provide a more powerful "spark" in cylinders.
Analog misfire
The system, which is now called a non-contact ignition, has passed several stages of development. The first "analog" ignition was designed and tested in 1948 by Delco-Remy. Brand Pontiac was the first car manufacturer to introduce a non-contact ignition with the Delcotronic impulsive launch of the 1963 model year's serial cars. The same system appeared at the same time on some modifications of Chevrolet Corvette.
To set up a modern ignition, the laptop is much more useful than a screwdriver and a wrench
Lucas presented its version of transistor ignition in 1955. The system was used for BRM engines and Coventry Climax for the Formula 1 cars in 1962. After a short period of time Ford has equipped the Lucas cars with cars of its satellite brand Lotus 25s. The system has shown itself well in the race in Indianapolis, and it has been offered to customers on some of the Ford's serial models in 1965. Motorola debuted with its non-contact ignition system in 1967. In Europe, the system appeared a little later-its analog ignition system was offered by Robert Bocsh and then by other electronics makers.
The non-contact ignition has been successfully used until the early 1980s available at the price of microprocessor systems. Further development in the field of misfire ignition is in one way or another related to them.
digital electronic ignition
At the turn of the 20th and 21st century, the development of digital technologies has led to the disappearance of analog systems of unplug ignition. The advantage of the scheme is that it is capable of issuing the discharge at virtually any time during the operating cycle, obeying the microprocessor control signal. Such a system has a huge margin of flexibility, which means that it is possible to optimize with high accuracy the timing of the ignition, and dynamically influence engine performance in a wide range of operating modes.
Engine management system combined with digital ignition
Modern engines shall be equipped with an engine management system (EMS) that fully controls the supply of the fuel and the ignition. The system bases the calculation on the readings of the primary sensors: the angle of the crankshaft (or the upper dead point (NRMM)), the MRI, the throttle position sensor and a number of sensors. The scheme determines which cylinder is in need of fuel, and how much it is needed, then opens the nozzle for a fixed period of time to jump the right amount. When the fuel line is in the combustion chamber, the system commands a candle and causes a spark, again, strictly at the right moment.
The electronic switch also has its own specific "disease"-the aging of the electronic components from which it is collected
Some EMS schemes keep a single coil of ignition as high voltage power generators. Other systems do not have a balancer and control the coils installed directly on each Ignition spark plug.
Installation of a misfire ignitor-ignition engine
The engines of old cars can generally be modified by setting a non-contact ignition. For example, for old General Motors, you can buy a special set of electronic ignition called Hot Wire. In Russia, the most common case is the installation of electronic ignition from VAZ 2108 to old cars "classic" series.
