Ford Sierra

1982-1993 of release

Repair and car operation

Ford Siyerra
+ 1.2. Car identification
+ 2. Maintenance
- 3. General data
   - 3.1. Cars with petrol engines
      3.1.1. Masses and transfer numbers
      3.1.2. Operational liquids
      + 3.1.3. Changes in a car design from 1984 to 1986.
      - 3.1.4. Changes in a car design from 1987 to 1989. OHC engine
         + Dm3 CVH 1,8 engine
         + DOHC engine
         - Service and repair
   Ignition system
   Injection system
   Scheme of EES IV system of the DOHC 2,0 engine of dm3
   Check and EES IV system adjustment
   Elimination of malfunctions
   Check of elements of EES IV system
   Gazoraspredeleniye system
   Head of the block of cylinders of the engine
   Engine dismantling
   Engine assembly
   Greasing system
         + Coupling Mechanical five-speed transmission of type N
         + Mechanical five-speed transmission of MT 75 type Automatic transmission Forward suspension bracket
         + Brake system
         + Electric equipment General data
      + 3.1.5. Changes in a car design with 1990 till February, 1993.
   + 3.2. Cars with diesel engines
+ 4. Engines
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment Injection system


Elements of system of injection of Ford Motorcraft EFI of the DOHC engine

1–inlet collector,
2–case of a butterfly valve,
3–the pipeline of supply of air to a regulator of idling,
4–the sensor of temperature of cooling liquid,
5–the sensor of temperature of arriving air,
6–regulator of pressure of fuel,
7–sensor of temperature of fuel,
8–collector of nozzles,
9–laying of nozzles,
10-fuel nozzles,
11-regulator of idling,
12-damper of fluctuations of air,
13-cover of the air filter,
14-a replaced element of the air filter,
15-case of the air filter.

Design and action principle

In electronic multipoint system of injection of Ford Motorcraft EFI the fuel submitted under constant small pressure, goes to four nozzles which inject it on inlet the valve. The amount of sprayed fuel is regulated by time of opening of the nozzles, a defined electronic control unit of EES IV on the basis of number of turns of the engine and size of course of the air consumed by the engine.

The electric fuel pump shipped in a tank, forces constantly fuel through the pipeline to the fuel filter, a regulator of pressure (6), a collector of nozzles (8) and to nozzles (10). The regulator of pressure supports constant pressure for this depression in an inlet collector.

The amount of the fuel submitted to each cylinder, is regulated by time of opening of the nozzle, falling on each cycle of operation of the cylinder.

The EES IV electronic actuation device defines this time on the basis of the following signals:

  – the sensor (5) temperatures of arriving air;
  – the sensor of number of turns of the engine located in the distributor of ignition;
  – the sensor (4) cooling liquids;
  – the sensor of provision of the butterfly valve located in a case of a butterfly valve (2);
  – the sensor of position of the lever of gear shifting of an automatic transmission (in cars with an automatic transmission);
  – the sensor of turning on of the compressor of the conditioner (in cars with conditioning).

On the basis of these signals the EES IV electronic actuation device provides optimum for these operating conditions of the engine structure of a mix of fuel and air.

Besides it operates the valve of a regulator (11) idlings which corrects number of turns of idling by means of supply of additional air via the pipeline (3). In the course of engine start the valve of a regulator of idling is open as much as possible.

In a no-load time its opening changes depending on requirement, holding constant number of turns of the engine.