Government Procurement Case and Engine Comparison Analysis of the SuiZhou 3308-Based EHY5045TWCE6 Sewage Treatment Vehicle In the municipal sanitation sector, sewage treatment vehicles—as emergency environmental protection equipment—are increasingly being incorporated into government procurement plans. The EHY5045TWCE6 sewage treatment vehicle, built on the SuiZhou 3308 chassis, has become the top choice for multiple projects nationwide due to its compact design and high-efficiency treatment capability. This article analyzes an actual procurement case from a municipal sanitation department to deeply explore the differences and suitable application scenarios among three engine configurations—85 kW, 100 kW, and 120 kW—and, combined with Chengli Special Purpose Vehicle’s delivery experience, provides selection guidance. I. Case Background: Procurement Requirements of a Municipal Sanitation Department In early 2026, the Urban Management Bureau of a certain district planned to procure a batch of sewage treatment vehicles for river basin remediation and emergency response to sudden sewage incidents within its jurisdiction. According to publicly released tender information, the budget was capped at approximately RMB 955,000 per unit, with requirements including strong mobility, high treatment efficiency, and compliance with emission standards. After comprehensive evaluation, the EHY5045TWCE6 model manufactured by Chengli Special Purpose Vehicle was selected. Based on the SuiZhou 3308 chassis platform and equipped with engines of varying power outputs, a total of three units were delivered at a unit price of approximately RMB 280,000. In this case, the client particularly emphasized the impact of engine performance on operational costs and requested a comparative analysis of the three powertrain options—85 kW, 100 kW, and 120 kW—to accommodate operational needs across both plain and partially hilly terrain. According to Mr. Zhang Yue, Sales Manager at Chengli (Tel: ), customized configuration enabled the client to achieve optimal cost-performance ratio within budget constraints. II. Engine Comparison: Differences and Fuel Consumption Analysis Among 85 kW / 100 kW / 120 kW Configurations The engine power output fitted to the EHY5045TWCE6 sewage treatment vehicle directly affects its pumping capacity and fuel economy. Below is a comparative table compiled based on Chengli’s MIIT announcement parameters (e.g., reference models such as CLW5070GSSD6) and real-world operational data: Engine Power | Max. Torque (N·m) | Rated Speed (rpm) | Fuel Consumption (L/100 km) | Applicable Scenarios ---|---|---|---|--- 85 kW | ~320 | 2800 | ~10–12 | Plain areas, light-load operations, short-distance transport 100 kW | ~380 | 2800 | ~12–14 | Hilly terrain, medium-load operations, mixed road conditions 120 kW | ~450 | 2800 | ~14–16 | High-altitude regions, heavy-load operations, frequent uphill driving Note: Fuel consumption values are derived from standardized test conditions; actual usage may vary depending on road conditions, load weight, and driver habits. In this procurement, the municipal sanitation department ultimately selected the 100 kW engine configuration, achieving an optimal balance between power performance and operating cost. Fuel Consumption Comparison and Cost Impact As shown in the table, the 85 kW engine delivers the lowest fuel consumption, making it ideal for routine inspection and light-duty sewage treatment in plain areas—but may suffer from insufficient power when deployed in hilly or heavy-load scenarios. The 100 kW engine offers moderate fuel consumption and represents the ‘golden standard’ option for most municipal projects. The 120 kW engine incurs the highest fuel consumption, yet remains essential for high-altitude regions (e.g.,