How did early fuel injection work?

In the early 1890s, Herbert Akroyd Stuart developed an indirect fuel injection system using a ‘jerk pump’ to meter out fuel oil at high pressure to an injector. This system was used on the Akroyd engine and was adapted and improved by Bosch and Clessie Cummins for use on diesel engines.

Does fuel injection require a computer?

the fuel injection pump was driven off of the crankshaft pulley by a belt and would pump high pressure fuel into the injectors timed properly to when the cylinder needed fuel. Originally Answered: Is fuel injection possible without the vehicle having a computer to program the injectors (ie purely mechanical)? Yes.

Are fuel injectors computer controlled?

A fuel injector firing The amount of fuel supplied to the engine is determined by the amount of time the fuel injector stays open. This is called the pulse width, and it is controlled by the ECU.

When did electronic fuel injection start?

Electronic improvement Bosch eliminated that need in 1967 when it introduced what would become the first successful mass-produced electronic fuel injection system for gasoline engines. It first appeared on the 1967 Volkswagen 1600. The technology replaced mechanical fuel injection systems.

What was before fuel injection?

Carburetors were used for decades, with great success, but when it comes to clean-air and precise air-to-fuel ratios, they were often unpredictable at best. The history of fuel injected automobiles dates back as far as the early 1900s. Initially, mechanical fuel injection was used exclusively in aircraft engines.

What was the first fuel injected vehicle?

Mercedes Benz 300SL Gullwing produced in 1955 was the very first car to employ direct fuel injection becoming the fastest cars at the time. After this mass production, the technology continued to improve and port-injection emerged which was relatively cheaper and better.

How does the electronic fuel injection system work?

An EFI system consists of a fuel pump, fuel injectors, sensors and an Engine Control Unit (ECU). Fuel gets pumped up from the tank via a fuel pump out to a fuel injection rail, then into individual injectors which are inserted directly into the intake manifold. The fuel injectors are controlled by the ECU.

How does an electronic fuel injection EFI system work on a petrol engine?

Electronic fuel injection (EFI) It travels through fuel lines towards the engine. The fuel pressure regulator knows how much fuel to let through to the injectors via a signal from the mass airflow sensor (MAF). This sensor tracks how much air is entering the engine at any given time.

How do electronic injectors work?

Electronic fuel injection allows for extremely precise control over how much fuel is sprayed into the cylinders. The fuel pressure regulator knows how much fuel to let through to the injectors via a signal from the mass airflow sensor (MAF). This sensor tracks how much air is entering the engine at any given time.

How is electronic fuel injection EFI controlled?

It uses engine RPM and signals from different sensors to meter the fuel. It does this by telling the fuel injectors when and how long to fire. The ECU often controls other functions like the fuel pump and ignition timing.

Who really invented fuel injection?

Jonas Hesselman
The concept of direct fuel injection has been around since 1925 when Swedish engineer Jonas Hesselman invented it. During WWII, some fighter planes were equipped with direct fuel injection to prevent stalling during high speed aerial maneuvers.

How does a mechanical fuel injection system work?

On normally-aspirated engines, a properly set up mechanical fuel injection system provides instant throttle response, which makes the system great for racing applications. Air is controlled with butterflies in a fuel injection hat or manifold.

When was the first electronic fuel injection system introduced?

Believe it or not, the first commercially available electronic fuel injection system was offered in 1957…or at least that was the plan.

When was mechanical fuel injection used in aircraft engines?

Mechanical fuel injection had been used in aircraft engines almost since the dawn of powered flight, and General Motors offered mechanical injection as an option on the 1957 283 V8 — a mere coincidence as far as our story is concerned, because that system wasn’t electronic.

What are the different types of fuel injection systems?

There exist several different varieties of both direct and indirect injection systems; the most common internal mixture formation fuel injection system is the common-rail injection system, a direct injection system. The term electronic fuel injection refers to any fuel injection system having an engine control unit .