Definiciones Conceptuales - Unidades Temáticas

III. Marco metodológico

3.1 Unidades Temáticas

3.1.1 Definiciones Conceptuales

balance

The controller according to the battery voltage varies the idling:

increases the time of injection of the electro-CR1MI2.2

regulates the line pressure, through the pressure regulator drv2

Fiat Grande Punto

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3.10.19

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The control unit, depending on the engine water temperature and pressure of the fluid refrigerant in air conditioning, controls:

the insertion of the electro fans to the first or second speed.

Fiat Grand e Punto

163/534

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3.10.20 Control

System Cruise Control (if applicable)

The control unit, depending on the position of the control lever cruise control, pilot directly the amount of fuel injected to control and maintain the car speed

stored.

An indicator on the dashboard, activated by the control unit indicates the operating status or deactivation of the system.

The cruise control is temporarily disabled:

by actuating the brake, operating the clutch;

with the "resume" to return to the stored speed.

The cruise control is not disabled if required acceleration (eg overtaking) and automatically restores the car to the set speed when you release

the accelerator.

The ASR (antispin) overrides the cruise control for security reasons.

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Component Summary

Components / functions HFM6

Drv2

High pressure pump Boost Pressure Sensor + T.aria

Supercharging pressure sensor without T.aria

DPF

Turbo actuator Maximum rail pressure Injectors

Regulation system

Functions

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3.11 Sensors

Rpm sensor

It 's mounted on the base and "faces" on the gear wheel placed on the flywheel.

E 'of the inductive type, ie it works by the variation of the magnetic field generated by the passage of the teeth of the phonic wheel (60 - 2 teeth).

The injection control unit uses the signal of the rpm sensor for:

determining the speed of rotation of the motor determine the angular position of the crankshaft.

The figure shows the rpm sensor into its components.

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1 Compass brass metal 2 Permanent Magnet 3 Plastic Body Sensor 4 Coil Winding

5 Cord Polar

6 Ring gear or tone wheel

7-wire coaxial cable or electrical connection

PIN-OUT

Signal Type Exit

frequency Exit frequency

Specifications

Winding resistance 790 ohms ± 20%

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Winding resistance 680 mH ± 20% (f = 1kHz)

The prescribed distance (air gap) to obtain correct signals, between the end of the sensor and the phonic wheel must be between 0.8 ÷ 1.5 mm.

This distance is not adjustable, so if you find an air gap to the value of out of tolerance, verify the integrity of the sensor and the gear wheel.

In the graph shows the output signal of the sensor in relation to the horizontal development the gear wheel.

1 Profile sprocket 2 speed sensor signal 3 Tooth reference

4 point detection for recognition PMS Operation

The transition from full to empty, due to the presence or absence of the tooth, determines a change of magnetic flux sufficient to generate an alternating voltage induced,

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deriving from the count of the teeth placed on a ring (or phonic wheel).

The frequency and amplitude of the voltage sent to the electronic control unit provides the same the measurement of the angular velocity of the crankshaft.

Cam angle sensor or phase

It is a Hall effect sensor. It is installed on the overhead at the shaft of distribution outlet side.

On the latter there is provided a tooth that allows the sensor to signal the position of phase timing of the engine.

The injection control unit uses the signal of the phase sensor to know the PMS eventually of the compression, and in the starting phase to synchronize the injections with respect to the position of the pistons.

timing sensor

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Operation

Current flows through a semiconductor layer, immersed in a magnetic field normal

(Lines of force perpendicular to the direction of the current) generates at its terminals a difference in potential, known as tension in the "Hall".

If the intensity of the current remains constant, the voltage generated depends only on the intensity of the magnetic field; is sufficient so that the intensity of the magnetic field various

periodically to obtain a modulated electric signal, whose frequency is proportional the speed with which changes the magnetic field. To achieve this change, the sensor is approached periodically by a tooth formed on the inner part of the pulley.

PIN-OUT

Phase signal

Supply

In the specific case of the phase sensor, it is powered by the engine control unit 5 Volt.

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Every time the rotor passes in front of the sensor is to generate, for the Hall effect, a variation of the output voltage from the sensor; this variation occurs for the entire

duration of the passage in front of the sensor rotor after which the signal returns to the initial value (5V).

NB the control unit in case of failure of the sensor uses an internal mapping emergency that will allow the motor to start, however,

Boost pressure sensor

The pressure sensor of supercharging is mounted on the intake manifold and allows to measure a suction pressure up to the value of 1.5 bar (corresponding to 2.5 bar absolute).

The sensing element is constituted by a piezoresistive element whose signal is amplified by an electronic circuit integrated in the sensor. The sensor is powered directly from electronic control unit with a voltage of 5V, and outputs the voltage directly

proportional to the supercharge pressure.

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Pinout sensor overpressure

1 2

Name

Supply Mass

Sensor Output Type signal

5V Input Mass Exit Analog

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In the sensor configuration 90 hp also integrates the temperature sensor Boost

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Pin-out

1 output signal pressure 2 power supply unit 5 v 3 output temperature signal 4 ground

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Engine coolant temperature sensor

E 'mounted on the thermostat and detects the temperature of the water by means of an NTC having negative coefficient of resistance.

Features engine water temperature sensor Temperature

(° C)

-40 -30 -20 -10 0

Resistance (Kohm)

48.80 27.41 15.97 9.62 5.97

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3.12 Air flow meter (flow meter) with integrated temperature sensor

In document La identidad digital en la interoperabilidad del gobierno electrónico en la perspectiva del RENIEC 2016 (página 68-80)