What are the effects of not having a car's three-way catalytic converter?
1 Answers
Not having a car's three-way catalytic converter will affect the vehicle's annual inspection, fuel consumption, power, and exhaust emissions. The three-way catalytic converter is the most important external purification device installed in the car's exhaust system. The specific impacts are as follows: 1. Excessive exhaust emissions: Without the three-way catalytic converter, harmful gases such as CO, HC, and NOx will be directly emitted in excessive amounts. 2. Fuel consumption: The absence of the three-way catalytic converter can affect the normal operation of the oxygen sensor, thereby impacting the accuracy of the oxygen sensor signals received by the engine. This can lead to inaccurate control of fuel injection, air intake, and ignition, resulting in increased fuel consumption. 3. Poor exhaust flow and reduced power: Without the three-way catalytic converter, when high-pressure exhaust is needed, blockages can cause poor exhaust flow, affecting the air intake and leading to a decrease in engine power. This results in reduced power, sluggish acceleration, and a general feeling of poor performance. In this scenario, to achieve the same power output, the driver will likely press the accelerator harder, which also leads to increased fuel consumption. Additionally, the inability to expel exhaust gases promptly can cause backpressure and reverse flow. When the pressure exceeds the engine's exhaust pressure, it can surge back into the combustion chamber, causing the engine to shake, stall, or even shut down.
