Beijing Diesel Bus Field Record

The Beijing diesel-bus test used SEMTECH ECOSTAR equipment to compare fuel consumption and exhaust measurements before and after treatment.

The report compares baseline and treated runs for one diesel bus under the documented test conditions.

Read the results alongside the vehicle, fuel, route, load and treatment protocol used in the test.

The operating context

SEMTECH ECOSTAR equipment recorded fuel use and exhaust indicators during the comparison.

Fuel consumption: baseline 16.28 L/100 km; treated 13.91 L/100 km. The source reports a change of 14.58%.

What was measured

CO₂: baseline 446.38 g/km; treated 381.55 g/km. The source reports a change of 14.52%.

CO: baseline 1.68 g/km; treated 1.25 g/km. The source reports a change of 25.66%.

Source-reported comparisons

NOₓ: baseline 6.36 g/km; treated 5.59 g/km. The source reports a change of 12.09%.

HC: baseline 0.20 g/km; treated 0.17 g/km. The source reports a change of 11.72%.

1. The Beijing diesel-bus test used SEMTECH ECOSTAR equipment to compare fuel consumption and exhaust measurements before and after treatment.
2. Compare fuel input with useful work under recorded operating conditions.
3. Measure the value that remains after treatment and implementation costs.

Interpreting the record

The changes shown are the percentages printed in the source report. Rounding can explain differences when recalculating from the displayed values.

This record covers one comparison. A different bus or fleet needs an evaluation suited to its fuel, equipment and working conditions.

Discuss a technical evaluation

This test concerns diesel. FCS-27 is the diesel product; FCS-28 is the gasoline product and needs its own supporting records.

For a follow-up evaluation, agree the application, measurement method and useful-output measure. Include treatment costs when assessing net value.

Contact CM for the original technical documents and help assessing their relevance to your operation.