MDE Unit 4 turbo charger Flashcards

A) A faulty wastegate or boost control valve

B) To absorb and manage the axial forces generated by the high-speed rotation of the turbocharger shaft

A) Compressor wheel and turbine wheel

B) To increase the air intake pressure, allowing more air to enter the engine cylinders

A) To increase the surface area for heat dissipation and enhance the cooling efficiency of the air

A) A malfunctioning turbocharger or worn turbine blades

A) Increased turbo lag and delayed acceleration, B) Excessive exhaust smoke or black smoke from the engine, D) Unusual whining or rattling noises from the turbocharger, F) Reduced power output and overall engine performance

B) To slow down the high-velocity air exiting the compressor and convert its kinetic energy into pressure

D) Properly securing the resilient/flexible mounts to prevent excessive movement and alignment issues

A) Tighten all intake and charge air cooler clamps and inspect for visible damage

A) Check and clean the turbocharger air intake and exhaust areas

B) To collect and direct compressed air from the compressor wheel into the engine's intake manifold

B) To decrease the temperature of the intake air, increasing its density and improving engine efficiency

A) A blocked or restricted intake pipe or manifold

A) Inspect and clean the charge air cooler, and replace it if necessary

C) To slow down the high-velocity air exiting the compressor and convert kinetic energy into increased pressure

C) Higher intake air temperature, leading to reduced engine efficiency and increased risk of knocking

A) A clogged air filter, C) An air leak in the intake system, D) A worn-out or damaged turbocharger turbine, E) A restricted exhaust system

A) Accumulation of dirt and debris on the cooler fins

B) An air leak in the intake system or charge air cooler

B) To prevent the leakage of lubricating oil and seal the gap between the rotating shaft and stationary components

B) To lower the temperature of the air, increasing its density and improving combustion efficiency

B) By the circulation of lubricating oil through the turbocharger bearings and water jackets

A) By reducing fuel consumption and increasing power output

D) By the engine’s lubricating oil system, which circulates oil through the turbocharger bearing housing

B) It increases the engine's power output by compressing more air into the cylinders

B) They power the turbine, which drives the compressor

C) It may increase exhaust temperature by optimizing the utilization of exhaust gases

B) To direct and accelerate exhaust gases onto the turbine wheel for improved energy extraction

B) To absorb axial forces generated by the high-speed rotation of the turbocharger's compressor and turbine wheels

C) On the shaft between the compressor side and the bearing housing

A) To allow the release of trapped air or gases from the cooling system

A) Mounting brackets, B) Vibration isolators, D) Rubber or elastomeric pads

B) Cleaning the air cooler to remove any buildup of dirt or oil

B) Ensuring proper alignment and integrity of the pulse piping and valves

B) By circulating engine lubricating oil through the turbocharger bearings under pressure

A) Inspect and clean the wastegate and boost control valve, and check for proper operation

B) Reduced engine responsiveness and increased turbo lag

B) To prevent corrosion by providing a sacrificial material that corrodes instead of the cooler components

A) Increased complexity and cost due to additional components and tuning requirements

B) It enhances the efficiency of the turbocharger by improving turbine response and reducing turbo lag

A) A damaged or clogged charge air cooler

B) Engine coolant (water or antifreeze)

A) To increase the surface area for heat exchange, enhancing the cooling efficiency

B) To draw in and compress the intake air before it enters the compressor wheel

B) By optimizing the turbine and compressor design to reduce energy losses

B) A system that utilizes a series of exhaust gas pulses to improve the efficiency of the turbocharger by enhancing turbine response and performance