KIA RIO

since 2000 of release

Repair and car operation

Control and engine management elements

Management of fuel system is carried out by the control unit the ESM engine (Engine Control Module). The ESM block carries out adjustment of a corner of an advancing of ignition, defines amount of fuel submitted to the engine, operates system of decrease in toxicity of the fulfilled gases and frequency of rotation of a cranked shaft of the engine idling, and also coupling of the compressor of the conditioner etc. The ESM block changes power setting depending on changing operational modes on the basis of signals from various switches and sensors.

For example, the ESM block regulates a corner of an advancing of ignition on the basis of signals of sensors which react to frequency of rotation of a cranked shaft, temperature of cooling liquid, the provision of the butterfly valve included at present of transfer, speed of the car etc.

The ESM block regulates frequency of rotation of a cranked shaft of idling on the basis of signals of sensors which react to the provision of a butterfly valve, speed of the car, the transfer included at present etc.

The sensor of a measuring instrument of a consumption of air (MAF – Mass Airflow Sensor)

The measuring instrument of a consumption of air provides the most direct method to measure engine loading as it measures amount of the air arriving in the engine. The stream of air arrives in the engine through a measuring instrument with warm and cold the wire elements forming a part of the bridge scheme. The current passing through a warm wire element, maintains its constant temperature at constant level, which above, than temperature of air arriving in the engine. The mass of air is determined by a current of temperature of a wire element necessary for maintenance. The more the stream of air and, naturally, its cooling, the is more than a size of a signal submitted on the ESM block.

The sensor of temperature of cooling liquid

The sensor of temperature of cooling liquid supervises temperature of cooling liquid and on the basis of a sensor signal the ESM block calculates width of the impulse submitted on nozzles therefore the amount of fuel of the engine submitted to cylinders changes, and also changes a corner of an advancing of ignition.

The ESM block works at the cold engine in a mode of an open loop therefore in cylinders of the engine richer toplivovozdushny mix moves and frequency of rotation of idling increases. It proceeds before achievement by the engine of normal working temperature.

The sensor of provision of a butterfly valve (TP – Throttle Position)

The sensor of provision of a butterfly valve hands over information on the basis of which the ESM block defines when the butterfly valve is closed, completely open or is intermediate provisions. The sensor is rigidly connected to butterfly valve shaft. Depending on the provision of a butterfly valve resistance of the sensor changes. For a sensor food from the ESM block on it tension of 5 Century moves. Target tension of the sensor changes from 0,25 In at the minimum opening of a butterfly valve to 4,7 In at complete opening of a butterfly valve.

The sensor of an angle of rotation of a cranked shaft (CKP – Crankshaft Position Sensor)

The sensor of an angle of rotation of a cranked shaft hands over to the ESM block information on the provision of a cranked shaft. On the basis of information of a target signal of this sensor and a signal of the sensor of provision of a camshaft the ESM block defines a corner of an advancing of ignition and the cylinder to which it is necessary to submit fuel. In the absence of target signals of the sensor the engine will not be started.

The sensor of provision of a camshaft (CMP – Camshaft Position Sensor)

The sensor of provision of a camshaft develops impulses on the basis of which the ESM block identifies the first cylinder and time of opening of a nozzle.

Detonation sensor

The sensor of a detonation reacts to high-frequency fluctuations of the block of cylinders and transforms them to the electric signals which size increases at increase in a detonation. On the basis of these signals the ESM block displaces the ignition moment towards delay therefore the detonation is eliminated.

The sensor of temperature of air arriving in the engine

The sensor of temperature of air arriving in the engine represents a termistor which resistance changes depending on temperature. The ESM block considers a signal of the sensor and corrects width of the impulse submitted on nozzles therefore the amount of fuel of the engine submitted to cylinders changes, and also changes a corner of an advancing of ignition.

Oxygen sensor

In the car two sensors of oxygen are established. Depending on the content of oxygen in the fulfilled gases the sensor of oxygen induces tension from 0 to 1 V.Na osnovanii of these data the control unit the engine changes time of opening of nozzles and a fuel ratio in a toplivovozdushny mix. In order that there was a complete combustion of gas mixture and in the fulfilled gases there were no harmful substances on 14,7 weight parts of air 1 part of fuel should have.

Both sensors of oxygen are equipped with heaters which maintain temperature of sensors in a certain interval at operation of the engine on all operational modes. Maintenance of a certain temperature of the sensor allows system to get into gear and work quicker in an idling mode.

Forward sensor of oxygen

The forward sensor of oxygen is located in an exhaust pipe behind catalytic converter and transmits a target signal on the basis of which the ESM block defines the content of oxygen in the fulfilled gases. On the basis of these data the control unit the engine changes time of opening of nozzles.