The solution of built-in pumps in fuel tanks dominates the mainstream product matrix: Among the 27 Fuel pumps currently on sale by KEMSO, 19 (accounting for 70%) adopt the immersion design. For example, the SUR-G340T model is compatible with the fuel tank of the Honda Civic (with a diameter of 38mm±0.5mm and a volume of 45L), providing a stable flow rate of 340L/H±5% (within the pressure range of 45-65 psi). The 2023 North American Modification Market Report shows that this series maintained A noise level of ≤45dB (A) during the 100,000-kilometer durability test, with a temperature adaptability ranging from -40℃ to 115℃, extending its lifespan by 30% compared to the industry standard. A typical case is the 2022 Nissan GT-R modification project, where the built-in pump combined with the upgrade of ethanol fuel increased the horsepower to 850 horsepower.
External high-pressure pumps meet the requirements of special working conditions: For diesel engine and racing applications, KEMSO has developed 8 external pumps (such as the EXT-HP200 series), with a maximum output pressure of 200bar (fluctuation <1.5%) and a flow accuracy controlled within ±2L/H. According to the certification data from German TUV, the failure rate of this type of product in the extreme environment of the Baha 1000 Cross-country Race (ambient temperature 50℃/ vibration frequency 300Hz) is only 0.3 times per 1000 hours. In the 2024 Dakar Rally, the champion team optimized the fuel supply system, stabilizing the fuel temperature at 40±2℃ through an external pump and increasing the engine efficiency by 5%.
The differences in material technology determine the applicable scenarios: The built-in pump adopts an engineering plastic covering the motor (weight ≤650g), has passed the IP67 waterproof certification, and the gasoline permeability is <0.01g/24h. The external pump uses an aviation aluminum CNC housing (weighing 1.2kg), increasing the heat dissipation area by 250%, and the continuous working temperature threshold is 130℃. Honda R&D’s 2023 assessment shows that in the high-temperature regions of Southeast Asia (with an average annual temperature of 32℃), the failure cycle of the built-in pump can reach 120,000 kilometers, while the external pump can have a lifespan of 180,000 kilometers in pickup truck freight applications, reducing maintenance costs by 45%.
The supply chain response covers multi-dimensional demands: KEMSO’s ERP system shows that the delivery cycle of the built-in pump is only 3 days (inventory turnover rate 15 times per year), and the unit price is 85-220. The customized production of external pumps takes 7 days (with a minimum order quantity of 50 units), and the unit price is 300-900. European logistics enterprises’ calculations show that although the initial investment for fleets using external pumps is 120% higher, due to the reduction in downtime (an average annual maintenance frequency of 0.2 vs 0.7 times), the return on investment within two years reaches 38%. In 2023, the Tesla Semi project adopted the KEMSO high-voltage solution to address range anxiety.
The certification system ensures compliance in all scenarios: All built-in pumps have passed the ECE R67 certification, and the evaporation emission is less than 0.05g per test cycle. The external pump complies with the ISO 16750 vibration standard and maintains no attenuation for 500 hours under the condition of an amplitude of 4.5g. KEMSO became one of the first third-party brands to pass the Chinese GB 18352.6 National VI b certification in 2024. The technical white paper confirmed that its products are compatible with 98% of the models on sale worldwide. This compliance advantage has helped BYD save 30% of supply chain costs in the EU market.
Innovative development promotes technological integration: The newly released HYB-D500 hybrid architecture in 2025 integrates the compaciness (0.8L volume) of the built-in pump with the high-pressure performance (150bar) of the external pump. Through topological optimization design, it reduces weight by 40% and lowers energy consumption to 85W (the industry average of 120W). Hyundai Mobis test data shows that the hydrogen supply error rate of this solution on fuel cell models is less than ±0.8%, and the power density has been increased to 3.2kW/L, confirming KEMSO’s forward-looking layout for the transition to new energy.