ENGINES
iVT International Off-Highway 2020 53
BELOW: Hatz Applicationizer: the generic term for
the application flexibility and worldwide deployment
of different engine models of the H-series, each with
nominal ratings, equipment (CR = Common Rail, T =
Turbocharger, IC = Intercooler, cEGR = cooled Exhaust
Gas Recirculation, DOC = Diesel Oxidation Catalyst,
DPF = Diesel Particulate Filter) and emission classes
Applicationizer: The
Hatz H-series engine
range is designed for
a very wide variety
of applications
The iHACS (intelligent Hatz Advanced
Combustion Strategy) is crucial in guaranteeing
optimal raw emissions. This involves special
combustion chamber geometry combined with
individually defined injection patterns, gas
exchange and optimized exhaust gas
recirculation. Another advantage to the iHACS
combustion procedure is particulate filter
adaptation. The highly efficient combustion
procedure with its low fuel requirements
promotes extremely low soot input while the
minimal oil consumption leads to reduced ash
input into the filter. This facilitates lengthy
intervals between the active regeneration cycles
with little influence on overall fuel consumption,
while realizing very long service lives before ash
scrubbing becomes necessary. Together, these
advantages cut overall operating costs.
Moreover, the tried-and-tested two-level
cooling of the exhaust gas recirculation (EGR)
with liquid-cooled EGR valve combined with
valve timing that dispenses with dirt-prone hotfilm
air flow sensors ensures stable emissions in
the long term. But it wouldn’t be Hatz if the
engineers hadn’t taken it a step further from the
get-go. This is because the engine series has
already been prepared for operation with
paraffinic fuels according to EN 15940 for “zero
carbon” operation.
Power aplenty in compact design
The power class of the entire H-series is
distinguished by a high supercharging degree
with simultaneously simple engine design. This is
achieved with the help of a mechanical wastegate
turbocharger and intercooler. The engine’s highly