Freightliner Cascadia truck on the road.

Freightliner Cascadia: The Sierra Madre Test

A technical report validating a 27.14% efficiency gain on a round trip from sea level to over 7,300 feet with a 65-ton gross towed weight.

Executive Summary

In a definitive field test conducted from January 13-14, 2025, the 360ES-PEM system demonstrated exceptional performance on the Tampico-Mexico City route. Despite a continuous ascent of over 7,300 feet with a gross combined weight of 65 tons, the system mitigated fuel consumption impact, achieving a remarkable global round-trip efficiency of 4.19 MPG (1.78 km/L)—a 27.14% improvement over the historical average for this route.

Client

Transportes Azteca

Vehicle

Unit 333 - Freightliner Cascadia (2023)

Engine

Cummins X15 (Efficiency Series)

Technology

360ES-PEM-15L

The Challenge: The "Sierra Madre Test"

The objective was to validate performance under maximum stress, replicating one of the most demanding routes in North America.

  • Extreme Load: The unit operated in a "full" double-tanker configuration with a 65-ton gross towed weight (50 tons of edible oil + 15 tons of equipment).
  • Critical Route: A continuous ascent from sea level (Tampico) to the Valley of Mexico (7,382 feet), a climb that severely punishes fuel consumption due to sustained high torque demand, gravity, and lower oxygen density at altitude.
  • The Baseline: Under these conditions, standard industry efficiency is expected to fall below 3.17 MPG (1.35 km/L).

The Solution: 360ES-PEM Integration

360 Energy Solutions installed the 360ES-PEM-15L onboard hydrogen generation system. The system's micro-computer injects a precise dosage of H₂ + O₂ to accelerate the flame front, ensuring more complete combustion and providing the extra torque required to overcome extreme grades without over-fueling.

Key Results (Validated Telemetry)

Phase 1: The Ascent (303 miles)

Performance during the grueling uphill journey with a full 65-ton load.

Result

2.87 MPG

(1.22 km/L)

Telemetry showing the ascent phase of the Sierra Madre test.

Telemetry: Ascent Phase

Analysis: The system successfully maintained efficiency above 2.8 MPG even while climbing with 65 tons. Without the system, consumption would have likely dropped below 2.35 MPG.

Phase 2: Critical Operation (31 miles)

Performance during a stretch of intense urban and mountain traffic.

Result

4.14 MPG

(1.76 km/L)

Telemetry showing the critical urban/mountain phase of the Sierra Madre test.

Telemetry: Critical Operation Phase at 8.7 mph avg.

Analysis: Despite an average speed of only 8.7 mph, which typically creates "ghost mileage" and ruins economy, the system sustained high efficiency.

Phase 3: Global Round Trip (604 miles)

The combined efficiency for the entire Tampico-Mexico City round trip.

Global Round-Trip Result

4.19 MPG

(1.78 km/L)

Telemetry showing the global round trip results of the Sierra Madre test.

Telemetry: Global Trip Result

Impact & Efficiency Analysis

MetricHistorical AverageWith 360ES-PEM% Improvement
Fuel Economy (MPG)3.29 - 3.414.19+27.14%
Fuel Consumption~15.4 gal/100mi~12.1 gal/100mi-21.28%

Conversions from km/L and L/100km.

Conclusion

The journey of Unit 333 validates the 360ES-PEM system's capacity to deliver significant efficiency gains even under the most extreme operating conditions. By "flattening the consumption curve," the system provided the necessary torque for the ascent while minimizing the fuel penalty, resulting in a highly profitable and sustainable outcome for the entire route.

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