5600230448 Wiring Terminal And Pin Connecting Wire Harness Connector

7.2.1 Inlet air temperature sensor

Basic knowledge

1. The role of intake temperature sensor

The air intake temperature can affect the engine fuel injection. When the air intake temperature is low, the resistance value of thermal resistance is large, the signal voltage of the sensor inputs ECU is high, and the ECU controls the engine to increase the fuel injection. The voltage is low, and the ECU controls the engine to reduce the fuel injection. The intake temperature sensor can detect the air intake temperature of the engine, and transform the air intake temperature into a voltage signal into the ECU as the signal of fuel injection correction.

2. Structure and connection circuit

The intake temperature sensor is a negative temperature coefficient thermistor, which generates different signal voltage according to the resistance change. Figure 7.3 The relationship between the physical diagram, structure and sensor resistance and temperature of the intake temperature sensor. The air intake temperature sensor is installed on the intake pipe or in the air flow meter. The specific installation location is shown in Figure 7.4. Figure 7.5 The connection circuit between the air intake temperature sensor and the engine ECU. There are two leaders in the intake temperature sensor: one is a 5V voltage THA supplied by the engine ECU, and the other is E2 and the engine inside the engine.

According to the provisions of the "New Energy Vehicle Production Enterprise and Product Admission Management Rules" (promulgated by the Ministry of Industry and Information Technology), which was officially implemented from July 1, 2009: new energy vehicles refer to the use of unconventional vehicle fuel as the source of power sources. (Or use conventional vehicle fuels, use new vehicle power devices), comprehensive vehicle power control and advanced technologies, and advanced technical principles formed with new technologies and new structures with new technologies and new structures.

New energy vehicles include hybrid vehicles, pure electric vehicles (BEVs, including solar vehicles), fuel cell electric vehicles (FCEV), hydrogen engine cars, other new energy (such as high -efficiency energy storage, di methal ether) cars and other types product.

1. The main classification of new energy vehicles

Because new energy vehicles are relatively traditional vehicle energy, its classification is also considered considerable. From the perspective of new energy vehicles, it can be roughly divided into 3 categories.

The first category is mainly to use fossil fuel (petroleum, diesel, natural gas, etc.) and its energy -saving type driven by biological products (new technologies such as the lightweight body, the engine and other energy -saving effects) internal combustion engines.

The second category is mainly using biofuels (biological diesel, biological ethanol, etc.) or other new energy (such as hydrogen) internal combustion engines.

The third category is the main use of electric vehicles, such as pure electric vehicles, plug -in hybrid vehicles, fuel cell vehicles.

From the degree of electrical hybrids of the vehicle, vehicles with a stop -stop system such as ISG and BSG have weak hybrid power, and even the strong hybrid power system is classified as the first category. Internal combustion engine drivers, the power and power driver system only plays a simple auxiliary role. Such a classification method also reflects the tendency of my country's current new energy vehicle support policies.

New energy vehicles can be divided into hybrid Vehi-CLE (HEV), pure electric vehicle (EV), and fuel cell electric vehicles (FCEV). According to the different types of battery, it can be divided into nickel -hydride battery electric vehicles, lithium battery electric vehicles and fuel cell electric vehicles.

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