Any increase in the exhaust back pressure of a four-stroke/cycle diesel engine will ().
- Areduce engine horsepower output
- Baid in silencing the exhaust noise
- Cincrease the mean effective pressure
- Dcontribute to effective cylinder scavenging
Any increase in the exhaust back pressure of a four-stroke/cycle diesel engine will ().
1、An increase in the fuel injection pump
An increase in the fuel injection pump discharge pressure can be caused by a/an _______.Aleaking delivery valveBexcessive bearing end playCplugged injector spray holeDincreased plunger stroke
2、Exhaust temperature increases in all
Exhaust temperature increases in all cylinders, the possible cause may be()(1) increased scavenging air temperature(2) air in fuel pumps and fuel valves(3) fouling of air and gas passagesA(1)+(2)B(1)+(3)C(2)+(3)D(1)+(2)+(3)
3、After fitting back in place the gear w
After fitting back in place the gear wheels, don’t forget to () them.AfulfillBeliminateCgreaseDbend
4、In the history of any language the wri
In the history of any language the writing system always came into being before the spoken form.A正确B错误
5、The primary concern in aiding a back i
The primary concern in aiding a back injury patient is().Arelieving the patient's pain by giving aspirin or stronger medicationBavoiding pos...
6、An increase in the air inlet manifold
An increase in the air inlet manifold pressure of a diesel engine will result in a/an ().Adecrease in maximum cylinder pressureBincrease in ignition lagCdecrease in fuel consumption per horsepower-hourDdecrease in exhaust manifold pressure