"Heat Engine and Social Development" Internal Energy and Heat Engine PPT Courseware 2

Description

"Heat Engine and Social Development" Internal Energy and Heat Engine PPT Courseware 2

A heat engine

steam engine

diesel engine

gas turbine

gasoline engine

Jet engine

rocket engine.

2: Working process

(1) When the internal combustion engine is working, the four strokes start over and over again. In one working cycle of the internal combustion engine, the piston goes back and forth twice, the crankshaft rotates twice, and performs work once.

(2) Only the power stroke does external work, and the remaining three strokes are auxiliary strokes, which are driven by the inertia of the large flywheel mounted on the crankshaft.

(3) In the compression stroke, mechanical energy is converted into internal energy, and in the power stroke, internal energy is converted into mechanical energy.

Class exercises

1. During the compression stroke of a gasoline engine, the working material is compressed, and the... ． ． ( )

A. Pressure increases and temperature decreases B. The pressure decreases and the temperature increases;

C． As the pressure increases, the temperature increases; D. pressure decreases, temperature decreases

2. According to the difference between gasoline engines and diesel engines, which of the following statements is correct? ． ． ( )

A. There is a spark plug on the top of the cylinder of a gasoline engine, and a fuel injector on the top of the cylinder of a diesel engine.

B. The gasoline engine inhales air, and the diesel engine inhales a mixture of air and diesel.

C. The suction stroke is the conversion of internal energy into mechanical energy

D. The compression stroke is the conversion of internal energy into mechanical energy

3. The flywheel speed of a four-stroke internal combustion engine is 1800 rad/min, and it completes in 1 s ( )

A. 30 strokes, done 30 times of work B. 60 strokes, done 60 times of work

C.120 strokes, doing 30 times of work D.60 strokes, doing 15 times of work

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For more information about the PPT courseware "Heat Engines and Social Development Internal Energy and Heat Engines", please click the "Heat Engines and Social Development ppt Internal Energy and Heat Engines ppt" tag.

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"Thermal Engine and Social Development" Internal Energy and Heat Engine PPT Courseware Learning Objectives 1. Understand the energy conversion process during the operation of heat engines. 2. Understand the working principle and working process of gasoline engines and improve your ability to read pictures. 3. Through the study of issues such as heat engine efficiency and heat engines and the environment...

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Update Time: 2024-08-17

This template belongs to Physics courseware Guangdong and Shanghai Edition Ninth Grade Physics Volume 1 industry PPT template

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