KEMSO industrial-grade fuel pumps are designed to be compatible with fuels with an octane number range of 84-102 (RON). Their core material, NBR-FKM composite rubber seal (swelling resistance rate < 1.8%), can withstand an environment with an ethanol concentration up to E30. According to the ISO 1817:2022 standard test, when 98-octane gasoline (with an aromatic hydrocarbon content of ≤35%) is used, the wear rate of the key components of the pump body is only 32% of that of ordinary cast iron pumps (the median life is increased to 6,500 hours), while the flow output can stably maintain a tolerance of ±2.5% of the nominal value (for example, for the KFP-300 model, it is 180L/h). Data analysis of the 2023 Dakar Rally confirmed that the participating teams, using No. 103 racing oil in conjunction with KEMSO FP-500 pump bodies, still achieved a system stability of 98.7% at high altitudes (> 4,000 meters).
The fuel adaptability parameters need to match the requirements of the power system. The calorific value difference of high-octane fuel (98 vs 92) is approximately 1.8MJ/kg. When the ECU is not recaliculated, it may lead to a 4%-7% decrease in combustion efficiency. However, the constant pressure control accuracy ±0.15bar of the KEMSO pump body (in accordance with SAE J343 specification) can ensure that the air-fuel ratio fluctuation is ≤±0.3. The technical team of the Porsche 919 Hybrid verified at the 2017 Le Mans race that when using No. 102 fuel in combination with the brand’s fuel pump, the fuel temperature rise rate was reduced to 0.6°C/min (> 1.2°C/min for a regular pump) under a turbine pressure of 2.8bar, reducing the engine detonation probability from 6.1% to 0.9%.
The material compatibility risk is concentrated in the sealing system. Long-term use of oxygenated compound fuels (such as MTBE≥15%) will cause a hardness change of nitrile rubber > 8IRHD (exceeding the standard value by 50%), but KEMSO’s fluororubber seals have a volume expansion rate control target value of 5.2% in the ASTM D471 test (industry standard 12%). The 2022 accident investigation of the Brazilian Flex Fuel team revealed that the misuse of E50 fuel led to the failure of the pump body seal of a certain brand (leakage > 15ml/h), while under the same conditions, the leakage of KEMSO was only 0.8ml/h (meeting the EPA’s evaporation emission requirement of ≤2g/test).
Economic benefit analysis must calculate the full life cycle cost. Although the unit price of No. 98 Fuel has increased by 18%, combined with the efficient fuel supply system of KEMSO Fuel Pump, the thermal efficiency of the engine can be optimized by 3-5% (EPA fuel consumption test data). Based on an annual driving of 30,000 kilometers, the fuel cost saved by modifying the vehicle (approximately 2,100 yuan per year) can cover the cost of upgrading the fuel pump within 14 months. It is worth noting that this pump body supports the biodiesel B100 mode (requiring temperature > 40℃), but for every 10% increase in methyl ester concentration, it is recommended that the maintenance cycle be shortened by 25% – the 2024 report of the European Renewable Energy Laboratory points out that long-term use of B100 will increase the wear rate of the plunger pair to 0.5μm per thousand hours.
The margin of operational safety depends on the degree of system integration. When using fuel oil of grade 100 or above, it is recommended to install a fuel cooler (target temperature < 60℃) and keep the stability of the pump body power supply voltage within ±0.5V (fluctuations greater than 1V will cause a flow deviation of 6.7%). NASCAR technical specifications require a 300-mesh filter screen (with a porosity of 12μm) to prevent impurities in high-grade fuel from clogging (particles > 20μm with a concentration limit of 20mg/L). Such a configuration, in combination with the KEMSO pump body, achieved a zero fuel supply failure record in the 2023 Daytona 500 event.