Skoda Boost Pressure Control Not Reaching Control Limit?
1 Answers
Boost pressure control not reaching the control limit is due to abnormal air intake in the vehicle, causing the supercharger to be restricted and unable to achieve its normal boost capacity. This issue may stem from a faulty intake pressure sensor, which provides inaccurate signals, leading to the supercharger's restricted operation. Replacing the intake pressure sensor can resolve this problem. Mechanical Supercharging: The mechanical supercharger is driven by the engine crankshaft via a gear speed increaser or by the crankshaft timing belt pulley through a timing belt and electromagnetic clutch. Mechanical supercharging effectively enhances engine power and offers better low-speed boost performance compared to turbocharging. Additionally, mechanical superchargers are easier to match with the engine and have a more compact structure. However, since driving the supercharger consumes engine power, the fuel consumption rate is slightly higher than that of a naturally aspirated engine. Pressure Wave Supercharging: The pressure wave supercharger rotor is driven by the crankshaft via a belt, utilizing exhaust pressure waves to compress air and increase intake pressure. The pressure wave supercharger has a simple structure, is easy to manufacture, operates at moderate temperatures, and does not require heat-resistant materials or cooling. Compared to turbocharging, it provides better low-speed torque characteristics but is bulkier, noisier, and has certain installation limitations. This type of supercharger is only suitable for low-speed ranges and is more commonly used in diesel engines due to their lower maximum RPM.
