Overview The Crankcase Evacuation System (CES) was developed to address engine blow-by gases, which can cause crankcase overpressure, oil leaks, and decreased engine efficiency. Traditional systems, such as the Draft Tube and Positive Crankcase Ventilation (PCV) systems, have limitations for high-performance engines. This project explores mechanical and electrical CES configurations to maintain a crankcase vacuum … Read more

Part 1: The Dynamics of Throttle Plate Position and Flow Area Understanding the relationship between throttle plate position and airflow is critical for optimizing engine performance. This connection directly impacts how efficiently an engine can transition from idle to full throttle. In this post, we’ll break down this relationship and its significance. Figure 1 shows … Read more

Part 2: Linear vs. Nonlinear Throttle Position Sensor Response Throttle control becomes a challenge when the engine demands rapid response, and the linear TPS struggles to keep up. This post examines why linear potentiometers fall short and how adjusting their response curve can provide a solution. Figure 2 highlights the mismatch between a linear TPS … Read more

Part 3: Mechanical and Electronic Solutions for Optimal Throttle Response To solve the enrichment problem, engineers can turn to either mechanical linkages or electronic modifications. This post explores both approaches and their advantages. Figure 3 shows how varying linkage ratios can create the desired convex response. By using levers, bellcranks, or idler shafts, engineers can: … Read more