CLEANER AND GREENER FOR ISUZU’S 4HK1 ENGINE | Transport News

Two years on from the introduction of 4HK1 engine by Isuzu Trucks to its medium-duty F Series range in 2016, it’s arguably the cleanest Japanese diesel engine available locally. It’s  available in two power ratings—154 kW (210 PS) and 177 kW (240 PS), with  726 Nm and 765 Nm of torque respectively.

Meeting emission control requirements of the current Australian Design Rules (ADR) 80/03, the 4HK1 engine is equivalent to Euro VI and complies with Japan’s Post New Long-Term (PNLT) emissions standard.

The engine achieves its green credentials by including an external injector with the diesel particulate diffuser (DPD) system, removing particulate matter from the engine’s emissions. This external injector eliminates oil dilution by commencing the regeneration process outside the engine block. The 5.2 litre engine also incorporates an Idle-Stop System that cuts engine use when the vehicle comes to a halt (for example at traffic lights) to reduce fuel consumption .

The 4HK1 engine is a low-displacement, high-torque, four-cylinder, two-stage turbocharged and intercooled diesel engine, paired with a torque converter–equipped automated manual transmission (TC–AMT). The torque converter significantly increases start-ability and driveability, replicating the take-off characteristics of a full automatic. The two-stage turbocharger combines low and high-pressure assistance to increase torque levels at low engine speeds, providing 45 per cent more torque at 1,000 rpm than previous models.Features such as truck-specific satellite navigation are included as standard items, complete with three years of free quarterly updates

The 210 PS variants include the Isuzu FRR, FRD and FSS 4×4 with a gross vehicle mass (GVM) range spanning 10.7 to 11 tonnes.  The 240 PS engine is fitted in the FRR at 11 tonnes GVM, and the FSR, which is available in two GVMs (12 and 14 tonnes).

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