Zhoukou SINOTRUK Sludge Tipper Truck (24 m³) Government Procurement Case: Engine Comparison and Winning Bid Solution Analysis I. Case Background: Zhoukou Municipal Sanitation Department’s Procurement of 24 m³ Sludge Transport Trucks In 2025, a municipal sanitation department in Zhoukou procured a batch of SINOTRUK sludge tipper trucks via public tender to meet sludge removal requirements from urban wastewater treatment plants. The tender specified a cargo volume of 24 m³, SINOTRUK chassis, and full compliance with China VI emission standards. The total budget was capped at approximately RMB 1.322 million, with an intended purchase of five units at an estimated unit price of around RMB 240,000 (based on publicly available tender information). Ultimately, Chengli Special Purpose Vehicle Co., Ltd. won the bid with a transparent configuration, robust after-sales support, and a highly competitive cost-performance solution, delivering five 24 m³ sludge tipper trucks. These units are now in active service, and customer feedback has been positive. Key challenges in this case included balancing heavy-load capability, adaptability to complex road conditions, and stringent environmental requirements—making engine selection critical. This article analyzes the differences among three engine options—85 kW, 100 kW, and 120 kW—comparing fuel consumption and suitability for plateau vs. plain operating conditions, and provides Chengli’s configuration recommendations. II. Engine Comparison: Analysis of Differences Among 85 kW / 100 kW / 120 kW Options Based on MIIT announcement parameters (e.g., model CLW5180GSSD6), Chengli’s SINOTRUK 24 m³ sludge tipper truck offers multiple engine power options. Below is a comparison of the three mainstream configurations: | Parameter | 85 kW (~115 HP) | 100 kW (~136 HP) | 120 kW (~163 HP) | |-----------|------------------|-------------------|-------------------| | Typical Application | Short-haul, light-load transport on plains | Medium- to long-haul, medium-load transport on plains | High-altitude/mountainous areas; heavy-load or steep-grade operations | | Max Torque | ~350 N·m | ~420 N·m | ~500 N·m | | Fuel Consumption (per 100 km) | ~18–22 L | ~20–25 L | ~22–28 L | | High-Altitude Adaptability | Poor (significant power loss) | Moderate (requires turbocharging assistance) | Excellent (standard turbocharged) | | Plain-Region Adaptability | Excellent (low fuel consumption, high economy) | Excellent (optimal balance of power and economy) | Excellent (excess power, higher fuel consumption) | | Reference Model | CLW5070GSSD6 (light-duty) | CLW5180GSSD6 (medium-duty) | Custom SINOTRUK Chassis | | Price Range (RMB 10,000s) | ~18–22 | ~22–26 | ~26–30 | Conclusion: For 24 m³ sludge transport trucks operating in Zhoukou’s plain terrain, the 100 kW engine represents the optimal cost-performance choice, striking the best balance between power and fuel economy. For frequent uphill operation or high-altitude applications (e.g., Yunnan, Guizhou, Sichuan provinces), upgrading to the 120 kW engine is recommended. III. Fuel Consumption Comparison: Real-World Operational Data Analysis Based on actual operational data from the Zhoukou project (referencing publicly disclosed tender information and Chengli’s after-sales feedback), the five 24 m³ sludge trucks travel approximately 100 km per day, operating at an average load factor of 80%. Fuel consumption comparison: • 85 kW engine: ~20 L/100 km → ~20 L/day → Annual operating cost ≈ RMB 58,000 (based on diesel price of RMB 7/L and 300 operational days/year). • 100 kW engine: ~22 L/100 km → ~22 L/day → Annual operating cost ≈ RMB 46,000 (due to superior powertrain matching)