英语翻译九：Electroniccontrolsystemconsistsofvariousenginesensors,electroniccontrolunit（ECU）,fuelinjectorassemblies,andrelatedwiring.TheECUdeterminespreciselyhowmuchfuelneedstobedeliveredbytheinjectorbymonitorin

Question

英语翻译
九：
Electronic control system consists of various engine sensors,electronic control unit （ECU）,fuel injector assemblies,and related wiring.The ECU determines precisely how much fuel needs to be delivered by the injector by monitoring the engine sensors.
十：
The engine cooling system actually is a temperature regulation system to protect engine from self-destruction.About one-third of the heat produced in the engine is converted into power,another third goes out through the exhaust pipe unused,and the remaining third must be carried away by the cooling system(some is utilized for heating the passenger compartment).
十一：
In detail,the cooling system is made up of the passages (water jacket) inside the engine block and heads,a water pump to circulate the coolant,a thermostat to control the temperature of the coolant,a radiator to cool the coolant,a radiator cap to control the pressure in the system,and some plumbing consisting of interconnecting hoses to transfer the coolant from the engine to radiator and also to the car‘s heater system where hot coolant is used to warm up the vehicle’s interior on a cold day.
十二：
Some vehicles,particularly high performance or diesel engines,are equipped with engine oil cooler.The purpose is to reduce the temperature of the oil,preventing oxidation and increasing the oil’s lubricating and protecting properties.
十三：
Petrol engines and engines operating on gas require an ignition system.This needed to provide the sparks that fire the charges in the combustion chambers.For this reason,petrol engines are sometimes referred to as spark-ignition engines.This distinguishes them from diesel engines that do not need a spark because they use compression ignition.
十四：
The automotive ignition system has two basic functions ; it must control the spark and timing of the spark plug firing to match varying engine requirements ,and it must increase battery voltage to a point where it will overcome the resistance offered by the spark plug gap and fire the plug .
十五：
Ignition timing is defined as the time in degrees of crankshaft rotation that the spark occurs idle.
This is called the base or initial timing.
The initial timing is adjusted several degrees BTDC,engine speed and load increase,the timing must increase.
The initial timing is set by means of adjusting the distributor.
十六：
The starting switch activates the system.
In the modern automobiles this switch is part of the keyed ignition.
The ignition switch usually has four positions:accessories,off,on (run),start.
All the ignition switch positions expect start have dents .That is ,the switch remains in those positions until moved by the operator.

Answer 1

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