求翻译：为了保证发动机正常工作，对供油系统进行自动控制或人工控制耗油，人工控制耗油一般只能在自动控制耗油发生故障时使用. 自动耗油供油泵转换工作示意图见图是什么意思？

In order to ensure the normal working of the engine, automatic control or manual control of fuel oil supply system, and manual control the use of fuel only in the automatic control of fuel failure. Automatic fuel supply pump conversion work is shown in Figure

In order to ensure proper engine oil for work in automatic control systems to control fuel consumption, or artificial artificial control fuel consumption in general can only be in automatic control fuel consumption used in the event of failure, auto fuel consumption for pump conversion work diagram

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In order to ensure normal engine, the oil supply system for automatic or manual control fuel consumption, control fuel consumption generally used only in automatic control of fuel usage fails. Automatic fuel feed pump conversion diagram shown in Figure

In order to guarantee the engine normal work, carries on the automatic control or the manual control fuel consumption to the oil supply system, the manual control fuel consumption only can break down time generally in the automatic control fuel consumption uses. The automatic fuel consumption chargi