Beginners Guide To The Sequential Firing Of Fuel Injectors

Sequential Fuel Injection

This is a more advanced multiport fuel injection method and it is also known as sequential port fuel injection or timed injection. Sequential fuel injection triggers each injector nozzle independently unlike basic multiport injectors that spray all of their fuel at the same time (or in groups). They spray the fuel just before or as their intake valve opens timed just like spark plugs. This reduces emissions and improves fuel efficiency.Sequential fuel injection is a type of multiport injection, and it is also called sequential port fuel injection (SPFI) or timed injection. They spray the fuel immediately timed like spark plugs before or as their intake valve opens. Auto spare parts Dubai efficiency and emissions improvements come in very small doses; it seems like a minor step. Because they are fired individually so in essence, the individual injectors work by themselves. No matter if the cylinder is ready or not other multi-port systems will fire all the injectors in groups. While there are many benefits of sequential variable fuel injection, direct injection is replacing the SEFI systems  quickly and becoming the system of choice.

Advantage

The main advantage of a sequential system is that when the driver makes a quick change the entire system has a fast response time. When the next intake valve opens more or less fuel can be released . It will be necessary for the entire engine to complete a revolution for systems that do not use sequential fuel injection before the fuel to air ratio can be altered. This type of injection provides even better fuel economy and also produces much lower emissions. Buy Auto spare parts online because for each cylinder  the fuel is altered, you can potentially get the best performance out of the engine that is possible.Which allows for very rapid changes in the fuel to air mixture the throttle response is immediate.The emissions released are lower because fuel is used more economically. Where vehicles are being produced to meet stricter emissions this is very important .

 

Disadvantages

Because there is a single diesel fuel injector for each cylinder, the larger the engine the more expensive the system. A V6 engine will need 6 injectors and a V8 engine will need 8 injectors. Sequential systems requiring an additional wiring harness are also more expensive because sequential systems are used to ensure that the injectors pulse sequentially. The electronic control is more complicated to run properly and requires additional equipment. Because most drivers will require professional installation and the system is more complicated and it is very difficult to install. This in turn the cost of the system also increases.

 

When to Use SEFI

Today fuel injection systems are very common so buy diesel fuel injection systems online in Dubai. However, a sequential system is not common. A sequential system is the best option for those that are looking for very fast handling response and the ultimate in performance. Almost all cars are sold with fuel injection, but there are aftermarket systems available to increase performance. While adding more horsepower carburetors really are best , the SEFI systems are very reliable, make driving easy, and reduce noise and emissions and require much less maintenance.

 

Aftermarket System

Because the stock systems are quite limited and the tuning software used is very inexpensive, many drivers look to upgrade to aftermarket sequential systems. In particular,an aftermarket system can supply real time tuning for your engine if the manufacturer has yet to make a tuning software program. Except for the computer interface in an aftermarket kit to find a computer, tuning software,wiring harness, sensors and cable. If you are planning to replace the entire multi-port system,depending on the make and model of the vehicle then expect to pay about $4,000.