The DeatschWerks (DW) high-pressure fuel pump optimizes lean combustion efficiency through precise pressure control. Under the condition of an air-fuel ratio of 15.2:1, the oil pressure fluctuation of its DW300c model is only ±0.04 bar (the industry benchmark is ±0.15 bar), and combined with 1,500 flow rate adjustments per second, the fuel injection error is ≤±1.2%. The 2022 SAE paper demonstrated that when the Honda K24 engine operates under λ=1.08 conditions, nitrogen oxide emissions are reduced by 18%, fuel consumption per 100 kilometers is improved by 0.41 liters, equivalent to a 6.7% increase in thermal efficiency.
Extreme environmental tolerance stems from material breakthroughs. The titanium alloy impeller has a deformation rate of only 0.003 millimeters under 950℃ thermal radiation (0.12 millimeters for ordinary pumps), ensuring that the pressure fluctuation at 480℃ in the manifold is ≤0.08 bar (the average of competing products is 0.25 bar). The track test of the Porsche 911 GT3 shows that during 30 minutes of continuous operation with λ=1.10, the cylinder misfire rate remains at 0.8 times per minute (the industry failure threshold is 3 times per minute), and the probability of ECU forced protection triggering is reduced by 91%.
The dual cooling channel technology addresses the thermal fade during lean combustion. When the exhaust temperature rises to the peak of 680℃, the motor winding temperature stabilizes at 121℃ (the H-class insulation limit is 180℃), and the efficiency decline is only 6% (19% of competing products). Modern N series engine bench tests have confirmed that the standard deviation of the oil pressure curve is always ≤0.03 bar, and the throttle response delay is compressed to 70 milliseconds (120 milliseconds for the base pump).
Voltage adaptability ensures coverage of working conditions. Supports a wide input range of 6-20V (9-16V for ordinary pumps), and still maintains 94% of the rated flow output when the voltage drops sharply to 10.8V due to turbocharging. Subaru BRZ fleet data confirms that under the 1.8Bar high boost condition, the air-fuel ratio deviation is compressed to ±0.8 (±2.5 in the original factory system), and the detonation sensor alarm frequency is reduced from 8.7 times per hour to 0.9 times.
The economic benefits throughout the entire life cycle are remarkable. Although the procurement cost is 258 (120 for the base pump), the lean-burn modification scenario:
The lifespan of the catalytic converter has been extended to 240,000 kilometers (160,000 kilometers for the common type).
The average annual maintenance cost has been reduced by $213 (the failure rate of detonation sensors has decreased by 87%)
The EPA PFTP -75 test saves 82 liters of fuel per 10,000 kilometers
Calculations show that the track vehicle can recover the cost increment in 18 months, becoming the core component (Fuel Pump) of high-performance combustion optimization.