Fuel Tank; High-Pressure Cng Line; Engine; Battery - Honda CIVIC Emergency Response Manual

Part 1

Fuel Tank

3
Removable
Divider

High-pressure CNG Line

Vehicle
Description
Fuel Tank
The fuel tank is in the trunk, behind a
removable divider that separates it from the
cargo area. The 36.6-inch-long (927 mm) and
18-inch-diameter (460 mm) tank is securely
mounted between two frames attached to
the trunk floor. The tank is made of flame-
resistant materials and certified to have
passed rigid dropping, bullet-impact, and
crash tests.
The natural gas in the tank is compressed up
to 3,600 psi. Fuel capacity is equivalent to
8 gallons of gasoline.
High-pressure CNG Line
Compressed natural gas (CNG) flows from
the fuel tank to the engine through a
stainless-steel, high-pressure CNG line that is
visible under the driver's side of the car. The
high-pressure CNG line is certified to an
internal pressure of 10,000 psi.

Engine

In the engine compartment, CNG pressure is
reduced to about 40 psi. At this pressure,
the CNG flows into the engine through the
four fuel injectors.

Battery

A conventional 12-volt battery is located
under the hood. This battery powers the
lights, audio system, airbags, seat-belt
tensioners, and other standard electronics. It
also powers a solenoid valve inside the fuel
tank (see page 4).