What Are the Reasons for Insufficient Power Generation in a Gasoline Generator?

[McWeston]

Reasons include excessively high or low no-load voltage, generator overload causing the load current and voltage to exceed rated values. Additionally, too low a load power factor, improper load adjustment leading to excitation current exceeding the rated value, and other factors can result in insufficient engine power. The working cycle of a gasoline generator: 1. Intake stroke: During this process, the engine's intake valve opens while the exhaust valve closes. As the piston moves from top dead center to bottom dead center, the cylinder volume above the piston increases, reducing the pressure inside the cylinder below atmospheric pressure, creating a vacuum suction effect. 2. Compression stroke: To ensure rapid combustion of the combustible mixture drawn into the cylinder and generate higher pressure for greater engine power, the combustible mixture must be compressed before ignition, reducing its volume, increasing density, and raising temperature—this is the compression process. 3. Expansion stroke: During this phase, both intake and exhaust valves remain closed. As the spark plug approaches top dead center, it emits an electric spark to ignite the compressed combustible mixture. After ignition, the mixture releases a significant amount of thermal energy, rapidly increasing both pressure and temperature. 4. Exhaust stroke: In this stage, the cylinder pressure is slightly above atmospheric pressure, approximately 0.105-0.115 MPa. When the piston nears top dead center, the exhaust stroke concludes, with exhaust gas temperatures around 900-1200 K.