How does K Jetronic fuel injection work?

How does K Jetronic fuel injection work?

The fuel distributor is mounted atop a control vane through which all intake air must pass, and the system works by varying fuel volume supplied to the injectors based on the angle of a moving vane in the air flow meter, which in turn is determined by the volume of air passing the vane, and by the control pressure.

What kind of fuel injection is used in a K Jetronic system?

K-Jetronic is a BOSCH mechanical continuous-fuel gas injection system that requires no control. It is divided into three main functional areas: air flow measurement, fuel supply and fuel intake.

How does Bosch fuel injection work?

Bosch K Jetronic With these systems, the fuel is delivered in a conventional manner from the fuel tank, via a rear mounted fuel pump, up to the fuel distribution unit (often known as the metering head) in the engine bay. It is delivered at a regulated pressure and any excess fuel is returned to the tank.

What is Bosch fuel injection?

Bosch Port Fuel Injectors (PFI) have a robust design and are capable of using Ethanol fuel (E100). The Bosch fuel injector has a return rate of 1 part per million (PPM), making Bosch the industry benchmark.

What are the advantages of electronic fuel injection?

Since EFI engines deliver air and fuel with better accuracy than a carburetor engine, they generally produce fewer emissions to go along with the improvement in fuel efficiency. Atomization of fuel also helps burn the fuel more completely.

What is K Jetronic system?

The K-Jetronic is a mechanical fuel injection system which injects continuously and which needs no form of drive whatsoever. Electronically controlled systems. The fuel is supplied by an electrically driven fuel pump which develops the pressure necessary for injection.

What is CIS fuel injection?

CIS, or continuous injection system, is a method of fuel injection which is very different from modern cars. The air intake stream controls the volume of fuel, the coolant temperature dictates when to use oxygen sensor regulation, and the oxygen sensor regulation further controls the volume of fuel.

Where are Bosch fuel injectors made?

Bosch’s first common-rail injector plant is in Wuxi in east China’s Jiangsu province. Like the first plant, the Qingdao plant will be jointly owned by Bosch and Wuxi Weifu, a Chinese diesel injector manufacturer.

How much does a fuel injection cost?

Depending on the make and model of your car, the average fuel injector replacement cost will run you about $800 to $1,450 for a full replacement. If you have the knowledge to do the replacement yourself, the parts alone are around $600 to $1200, while the labor cost is only about $200 to $250.

How does a CIS system work?

On a CIS engine, the air intake lifts a plunger, and fuel is injected in varying quantities depending on the position of the plunger. Should you have an air intake or vacuum leak, the plunger will not lift fully, and your engine will run lean, or potentially not start, depending on the severity of the vacuum leak.

How does a K-Jetronic fuel injection system work?

K-Jetronic is a BOSCH mechanical continuous-fuel gas injection system that requires no control. It is divided into three main functional areas: air flow measurement, fuel supply and fuel intake. Measurement of air flow or amount of intake air into the engine was controlled by a gas damper and measured by an air flowmeter.

How to repair Bosch KE-Jetronic fuel injection system?

Now let us have a look how Bosch KE-Jetronic fuel injection system can be diagnosed and repaired on an example of Audi 100 2.3i AAR. Detach the operational relay set from the relay block as well as from the safety appliance located under the steering tube. Install a switch instead of the operational relay.

When did Bosch start using mechanical fuel injection?

Approximately up until 1994 mechanical fuel injection systems have been installed on certain Mercedes, Audi, Volkswagen, Ford etc. car models – starting with Bosch K-Jetronic, and after that – Bosch KE-Jetronic. These fuel injection systems were considered to be really reliable and trustworthy.

How does fuel pump work in Bosch Jetronic?

The fuel pump pushes fuel through the accumulator and filter to the metering head. This fuel acts against the main regulator, which pushes the System Pressure to 5.5BAR. Most of the fuel continues on into the metering head, but the excess is returned to the tank.