Engine turbo 5

Why do we fit a Dump Valve?

• To release excess pressure from the engine

• To increase fuel efficiency

• To reduce engine noise

• To improve vehicle aerodynamics

What are the advantages of a Twin Scroll Turbocharger?

• Improved throttle response and reduced turbo lag

• Increased engine weight and complexity

• Higher fuel consumption

• Reduced engine power output

Why do we need a Charged air cooler?

• To reduce the engine temperture

• To reduce the air temperture

• To Increase the air temperture

• To storage the charged air until its required

The ​ (a)   Is spun by the​ (b)   , which in turn through the shaft spins the​ (c)   which, compresses the​ (d)   .

• Turbine wheel
• exhaust gases
• compressor wheel
• air

The​ (a)   of the ​ (b)   is determined by the ​ (c)   spining the ​ (d)   .

• Speed
• compressor wheel
• exhaust gases
• turbine wheel

Advantages and disadvantages of single scroll and twin scroll turbos

Groups:

(a) Advantages of Single scroll

,

(b) Disadvantage of single scroll

,

(c) Advantage of twin scroll

,

(d) Disadvantage of twin scroll

• More efficient

• Poor at low RPM

• More compact

• Simpler

• Better at higher RPM

• Uses thermal, kinetic and exhaust pilse energy

• Poor at higer RPM

• Cheaper

• More complex

• More expensive

• Generally less efficient

• Uses only the thermal and kinetic energy

• Better at Low RPM