4BTA 3.9: The classic diesel engine meets the "counter-current" survival law
Today, as the wave of electrification sweeps across the globe, the Cummins 4BTA 3.9, a diesel engine that has been around for more than 30 years, is still active in mines, fishing boats and even polar research teams.It is like a "mechanical veteran", writing an alternative philosophy of survival in the era of internal combustion engine with hardcor