Isuzu Unveils Alternative Fuel Engine

Isuzu Motors America has unveiled the 4HV1, the first in what the company said will be a growing line of alternative fuel engines targeting off-highway and industrial applications. The 4.6 L engine is rated 81 hp when operating on natural gas or propane.

The first of what will be a growing line of alternative fuel engines targeting off-highway and industrial applications has been introduced by Isuzu Motors America at ConExpo. The 4HV1 is based on an on-highway diesel engine that has been in production since 2012 and has been established as a durable, reliable engine in truck applications in the U.S. and Asia, the company said.

With a bore and stroke of 115 x 110 mm, the inline four-cylinder engine has a displacement of 4.6 L and is rated 81 hp (60.5 kW) when operating on natural gas or propane. The engine’s electronic control module comes with engine calibrations for both fuels, selectable by the customer, the company said. The base diesel engine has been modified for gaseous fuel operations with components supplied by Impco.

“There are a lot of gasoline engines in the market that are converted to propane or natural gas,” said Ken Martin, director, Sales and Service at Isuzu. “This engine is derived from a heavy-duty diesel engine, bringing with it all the durability and reliability of a diesel.”

The 4HV1 will go into standard production in 2018 and will be followed by other displacements, Martin said.

Also at ConExpo, Isuzu displayed its line of open and enclosed power units based on its C-, L- J- and H-Series REDTech diesel engines, as well as a diagnostic service tool targeted at rental applications.