customs transaction analysis

List of the table of contents of this article:

• 1,customs transaction analysis Engine extra-speed characteristic curve
• 2, external characteristics of the engine
• 3, Introduction to external characteristics
• 4. How to deeply understand the characteristic curve of the engine?
• 5, What is the characteristic curve outside the engine?

Engine extra-speed characteristic curve

1. What is the difference between the change of the partial opening speed characteristic curve and the external characteristics? The reason is that the source voltammetry characteristic curve reflects the characteristics of the power supply. , you can get the information E and r of the power supply.

2. The external characteristic curve of the engine refers to the curve of the power or torque measured with the speed of the engine at full load. The following is a specific introduction: Engine characteristic curve: If the functional relationship between the engine power torque and fuel consumption rate and the engine crankshaft speed is expressed as a curve, this curve is called the engine characteristic curve.

3. Reflect the commonly used speed characteristic curve of the engine operation, sendThe velocity characteristic curve of the motive engine shows the continuous change of effective power n (kilowatt), torque m (N·m), and the specific fuel consumption g (g/kWh) with the engine speed n. The speed characteristics of the engine are measured on the brake test bench.

external characteristics of the engine

1. Load characteristics.The external characteristics of the engine refer to the relationship between the power, torque and fuel consumption rate of the engine and the change of the crankshaft speed of the engine when the throttle valve is fully open or the high-pressure oil pump is in the maximum oil supply position, which reflects the performance of the engine under maximum load conditions.

2. The external characteristics of the engine are the relationship between the output power, rotation distance and diesel consumption rate of the engine and the change of the crankshaft speed ratio of the engine, that is, the speed characteristic of the engine.

3. External characteristics of the engine The relationship between the power, torque and fuel consumption rate of the engine and the change of the crank speed of the engine, that is, the speed characteristics of the engine.

4. Speed characteristics: When the position of the fuel supply regulating mechanism of the engine is certain, the performance index (Me, Ne, ge) of the engine changes with the speed.

5. What is the difference between the change of the partial opening velocity characteristic curve and the external characteristics? The reason is that the source voltammetry characteristic curve reflects the characteristics of the power supply, and the information E and r of the power supply can be obtained.

Introduction to external characteristics

1. When the throttle valve of the gasoline engine is fully open (or when the diesel engine injection pump is at the maximum fuel supply), the speed characteristic is called the external characteristic of the engine, which represents the maximum power performance that the engine can obtain.

2. The external characteristics and some characteristics of the engine are collectively referred to as the speed characteristics of the engine.

3. The welding transformer has the external characteristics of steep descent. The so-called steep external characteristic refers to the characteristic of a sharp decline in the relationship between the output voltage and the output current during the working process of the welding transformer.In the process of AC arc welding, in order to generate enough heat and a stable arc, higher current and lower voltage are required.

4. The external characteristic curve of the engine refers to the curve of the power or torque measured at full load of the engine with the speed. The following is a specific introduction: Engine characteristic curve: If the functional relationship between the engine power torque and fuel consumption rate and the engine crankshaft speed is expressed as a curve, this curve is called the engine characteristic curve.

How to deeply understand the characteristic curve of the engine?

1. The speed characteristic curve of the engine indicates the effective power N (kilowatt), torque M (Nwton meter), and the specific fuel consumption g (g/kWh) with the startThe performance of continuous change of the machine speed n, and the speed characteristics of the engine are measured on the brake test bench.

2. Engine characteristics refer to the law that the performance indicators of the engine change with the adjustment and operating conditions of the engine. The curve representing its change law is called the engine characteristic curve. General-purpose engines have speed characteristics, load characteristics, regulation characteristics and general-purpose characteristics.

3. First of all, the effective power of the engine is the most important indicator of performance. Many people will mention its engine performance when buying a car, mainly based on the power of the engine.

4. If the speed characteristics of the engine are used to explain the concept of load rate and load, the definition of engine load rate will be clearer. Curve I is the external characteristic, and curve II and III are partial velocity characteristics.When n=3500r/min, if the throttle valve is fully opened, the maximum output that may be generated by this speed is 45KW.

What is the characteristic curve outside the engine?

When the engine throttle valve is fully open or the high-pressure oil pump is in the maximum oil supply position, this characteristic is called the external characteristic of the engine, and the corresponding relationship curve is called the external characteristic curve; if the throttle valve is partially open, it is called the partial load characteristic curve of the engine.

The external engine characteristic curve is measured when the engine can emit maximum power in the best working state of the engine. Its curve characteristics are: both the power curve and the torque curve show convex curves, but the performance of the two is different.

The external characteristic curve is the relationship curve diagram of torque, power and fuel consumption rate change with rotational speed under full load conditions of the engine (fully open throttle). It is drawn in the right-angled coordinate system. The horizontal axis x axis is the rotational speed, and the vertical axis y axis draws three curves of torque M, power P and fuel consumption rate ge from top to bottom respectively.

reflects the commonly used speed characteristic curve of the engine operation. The speed characteristic curve of the engine represents the continuous change of effective power n (kilowatt), torque m (N·m), and specific fuel consumption g (g/kWh) with the engine speed n. The speed characteristics of the engine are measured on the brake test bench.

The external characteristic curve of a synchronous generator refers to the relationship between the voltage at the motor end and the load current. The external engine characteristic curve refers to the curve in which the power or torque measured at full load of the engine changes with the speed.

Engine characteristics refer to the law that the performance indicators of the engine change with the adjustment and operating conditions of the engine. The curve representing its change law is called the engine characteristic curve. General-purpose engines have speed characteristics, load characteristics, regulation characteristics and general-purpose characteristics.