DigiPlus

List of the table of contents of this article:

• 1,DigiPlus What is the speed of the engineDegree characteristics
• 2, Speed height characteristics of intake engines
• 3, Compare the difference between engine load characteristics and speed characteristics
• 4. What are the load characteristics and speed characteristics of gasoline engines?

What is the speed characteristic of the engine

1. When the engine is partially open or the fuel pull rod is working in a partial oil supply state, the measured engine torque, power and fuel consumption rate, It is called the partial load speed characteristic of the engine. Abbreviated as partial characteristics.

2. [Answer]: The relationship curve that changes with the change of engine performance parameters (power effective torque, fuel consumption rate, etc.) with the change of engine speed.

3. The external characteristics and some characteristics of the engine are collectively referred to as 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. Engine load characteristics: When the speed of the engine remains unchanged, its performance index is related to the change of the load. When determining the load characteristics, the speed must remain unchanged.

Speed height characteristics of aspirated engine

In addition, because of the aspirated engineRelying on aerodynamics rather than rocket propulsion, it has greater mobility and relatively high safety: the flight can be canceled at any time, and the aircraft returns to the ground by gliding. The task execution is also more flexible.

The maximum flight speed of the jet engine is only 3 to 4 Mach. If the speed is higher, the engine parts will overheat. In a supersonic stamped jet engine, air enters the engine through the air intake. Air will slow down and be compressed as the aircraft accelerates through the atmosphere. The supersonic airflow formed is then mixed with fuel and burned.

Engine speed characteristics refer to the relationship between the change of effective power Pe, effective torque Te and effective fuel consumption be relative to the engine speed n. If the speed characteristics of the engine are used to explain the concepts 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.

Compare the difference between engine load characteristics and speed characteristics

1. Speed characteristics are the curve of change of engine performance with engine speed when the position of the engine throttle remains unchanged. Engine load characteristics: When the speed of the engine remains unchanged, its performance index is related to the change of load. When determining the load characteristics, the speed must remain unchanged.

2. Load characteristics, speed characteristics and general characteristics (also known as universal characteristics). ( 1) The law that the performance parameters of a diesel engine change with the effective power under the condition that the rotational speed remains unchanged is called the load characteristic. These performance parameters mainly include: fuel consumption per hour, effective fuel consumption rate and exhaust temperature, etc.

3. 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.

4. Speed characteristics refer to the curve of the change of engine performance with the engine speed when the position of the engine throttle remains unchanged. When the engine speed changes, the power it emits will also change accordingly; and when the load of the engine changes, its speed will also be affected.

5. Load characteristics: If the throttle valve is partially turned on, it is called the engine load characteristic.

What are the load characteristics and speed characteristics of gasoline engines?

Engine load characteristics: When the speed of the engine remains unchanged, its performance index is related to the change of load, and the speed must remain unchanged when measuring the load characteristics. ( That is, when the engine speed remains unchanged and the throttle opening gradually changes, eachThe relationship between hourly fuel consumption B and fuel consumption b changes with load (Pe, Ttq or Pme).

It mainly includes five kinds of engine adjustment characteristics, speed characteristics, speed regulation characteristics and universal characteristics. Load characteristics refer to the law that the active power and reactive power absorbed by the power load from the power supply of the power system change with the change of the voltage at the load endpoint and the frequency of the system.

The load characteristic of gasoline engine is also known as the throttle characteristic, and the load characteristic of the diesel engine is also known as the fuel adjustment characteristic. One of the performance characteristics of the engine is called the load characteristic, which refers to the relationship between the effective ratio of the economic index and the change of fuel consumption with the engine load when the engine speed is constant.

Load: is a ratio. The load of the engine at a certain speed is the ratio of the power emitted by the engine at that time to the maximum power that may be emitted at the same speed.External characteristics: Before understanding the external characteristics, you should understand the speed characteristics.

Method: Diesel engines usually make a universal characteristic diagram through the load characteristic method, while gasoline engines usually make a universal characteristic diagram by the velocity characteristic method. Function: According to the universal characteristic diagram, it can be seen that the economy of the engine under various working conditions. The equifuel consumption curve of the innermost layer is equivalent to the most economical area. The outward the curve, the worse the economy.