Fleet Maintenance - 32

SPOTLIGHT ON DRIVETRAIN

		┬╗Consider completing fuel injection system service and repairs when a fuel injector
or fuel pump needs to be replaced to avoid contaminating the injectors.
84021754 | Tzogia Kappatou | Dreamstime

Getting the
most out of fuel
injection systems
How to spot
when there's a
problem, address
it, and maintain
a fuel injection
system for peak
performance.
By Kayla Oschmann

32 Fleet Maintenance | April 2020

A

s the drive to lower emissions and improve fuel
efficiency continues, proper maintenance of the
fuel injection system is essential for optimal fleet
engine performance. The fuel injection system is
responsible for delivering fuel to the cylinders of
an engine. To operate correctly, the timing and
amount of fuel used during the injection process
must always be precise and controlled.
When a fuel injection system issue arises, it can
lead to poor vehicle performance. To avoid any
inconveniences, fleets can educate themselves on
some of the latest technologies, signs that indicate
when there is an issue and the equipment needed to address it, as well as how to maintain fuel
injection systems.

Latest technologies

Cylinder deactivation, or CDA, is a technology
used to reduce fuel consumption and vehicle emissions, especially at low speeds and/or low loads.
CDA disables cylinders (can be one or more)
by deactivating the intake and/or exhaust
valves, closing them off completely. As a result,
the reduction in the number of cylinders firing
reduces fuel demand to improve fuel economy,
and the remaining active cylinders will operate
at a higher temperature. This design can also help
to improve the efficiency of the aftertreatment
system by allowing the system to reach the optimum operating temperature for a passive diesel
particulate filter (DPF) regeneration.
All diesel engines require a fuel injection
system because of how fuel and air mix to initiate the combustion process. Common rail fuel
injection is the type of fuel injection system found
in all modern diesel engines. Fuel is dispersed
to each injector using a high-pressure rail where
the electronically controlled injectors can allow
multiple injections at any pressure at any time.
Higher injection pressures allow for better fuel
atomization, which produces more power and
fewer emissions.
With high injection pressure and control over
injectors, the common rail injection system offers
reduced emissions, noise, and vibrations, as well as
increased fuel efficiency and engine performance.
Manufacturers have taken the common
rail fuel injection system technology even



Fleet Maintenance

Table of Contents for the Digital Edition of Fleet Maintenance

Uptime: The responsibilities of being an essential business
How fleets can benefit from today's 6x2 axle configurations
With greater voltage comes greater responsibility
How to manage unanticipated roadside events
Amping up the voltage
Getting the most out of fuel injection systems
Management: Do you sabotage success?
Economic Outlook: Dealing with a natural disaster
Fleet Parts & Components
Tools & Equipment
Classifieds
Guest Editorial: NASTF steps into the world of heavy duty
Tools & Shop Equipment Supplement: Diagnostic Tools
Tools & Shop Equipment Supplement: Power Tools
Tools & Shop Equipment Supplement: Specialty & Hand Tools
Tools & Shop Equipment Supplement: Shop Equipment
Tools & Shop Equipment Supplement: Tool Storage
Fleet Maintenance - 1
Fleet Maintenance - 2
Fleet Maintenance - 3
Fleet Maintenance - 4
Fleet Maintenance - 5
Fleet Maintenance - 6
Fleet Maintenance - 7
Fleet Maintenance - Uptime: The responsibilities of being an essential business
Fleet Maintenance - 9
Fleet Maintenance - How fleets can benefit from today's 6x2 axle configurations
Fleet Maintenance - 11
Fleet Maintenance - 12
Fleet Maintenance - 13
Fleet Maintenance - 14
Fleet Maintenance - 15
Fleet Maintenance - With greater voltage comes greater responsibility
Fleet Maintenance - 17
Fleet Maintenance - 18
Fleet Maintenance - 19
Fleet Maintenance - 20
Fleet Maintenance - 21
Fleet Maintenance - How to manage unanticipated roadside events
Fleet Maintenance - 23
Fleet Maintenance - 24
Fleet Maintenance - 25
Fleet Maintenance - 26
Fleet Maintenance - 27
Fleet Maintenance - 28
Fleet Maintenance - 29
Fleet Maintenance - Amping up the voltage
Fleet Maintenance - 31
Fleet Maintenance - Getting the most out of fuel injection systems
Fleet Maintenance - 33
Fleet Maintenance - 34
Fleet Maintenance - 35
Fleet Maintenance - Management: Do you sabotage success?
Fleet Maintenance - Economic Outlook: Dealing with a natural disaster
Fleet Maintenance - Fleet Parts & Components
Fleet Maintenance - 39
Fleet Maintenance - 40
Fleet Maintenance - 41
Fleet Maintenance - 42
Fleet Maintenance - Tools & Equipment
Fleet Maintenance - 44
Fleet Maintenance - 45
Fleet Maintenance - 46
Fleet Maintenance - 47
Fleet Maintenance - 48
Fleet Maintenance - Classifieds
Fleet Maintenance - Guest Editorial: NASTF steps into the world of heavy duty
Fleet Maintenance - 51
Fleet Maintenance - 52
Fleet Maintenance - S1
Fleet Maintenance - S2
Fleet Maintenance - S3
Fleet Maintenance - S4
Fleet Maintenance - S5
Fleet Maintenance - Tools & Shop Equipment Supplement: Diagnostic Tools
Fleet Maintenance - S7
Fleet Maintenance - S8
Fleet Maintenance - S9
Fleet Maintenance - S10
Fleet Maintenance - S11
Fleet Maintenance - S12
Fleet Maintenance - S13
Fleet Maintenance - S14
Fleet Maintenance - S15
Fleet Maintenance - S16
Fleet Maintenance - S17
Fleet Maintenance - Tools & Shop Equipment Supplement: Power Tools
Fleet Maintenance - S19
Fleet Maintenance - S20
Fleet Maintenance - S21
Fleet Maintenance - Tools & Shop Equipment Supplement: Specialty & Hand Tools
Fleet Maintenance - S23
Fleet Maintenance - S24
Fleet Maintenance - S25
Fleet Maintenance - Tools & Shop Equipment Supplement: Shop Equipment
Fleet Maintenance - S27
Fleet Maintenance - S28
Fleet Maintenance - S29
Fleet Maintenance - Tools & Shop Equipment Supplement: Tool Storage
Fleet Maintenance - S31
Fleet Maintenance - S32
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