Programmed Fuel Injection, or PGMFI/PGM-FI, is the name given by
Honda
is a Japanese public multinational conglomerate manufacturer of automobiles, motorcycles, and power equipment, headquartered in Minato, Tokyo, Japan.
Honda has been the world's largest motorcycle manufacturer since 1959, reaching a producti ...
to a proprietary digital electronic
fuel injection system for
internal combustion engine
An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal c ...
s with port injection. It is available since the early 1980s. This system has been implemented on
motorcycles
A motorcycle (motorbike, bike, or trike (if three-wheeled)) is a two or three-wheeled motor vehicle steered by a handlebar. Motorcycle design varies greatly to suit a range of different purposes: long-distance travel, commuting, cruising ...
,
automobiles, and
outboard motors
An outboard motor is a propulsion system for boats, consisting of a self-contained unit that includes engine, gearbox and propeller or jet drive, designed to be affixed to the outside of the transom. They are the most common motorised method ...
.
History
With its origins beginning with the CX500 and CX650 turbocharged motorcycles in 1982 and 1983, respectively, Honda's PGM-FI made its way into their automobiles in the early 1980s with the
ER engine equipped
City Turbo. The system gained popularity in the late 1980s in their Accord and Prelude models with A20A, A20A3 & A20A4 engines (
Honda A engine
The Honda A series inline-four cylinder engine is used in 1980s Honda Accord and Prelude models. It was introduced in 1982, with the second-generation Honda Prelude, and available in three displacement sizes: 1.6-, 1.8- and 2.0-liters. It featur ...
), and its motorcycles later on. In 1998, Honda built its third motorcycle with fuel injection; the
VFR800FI.
Operation
The PGM-FI system relies on a
piezoelectric sensor to indirectly measure the air quantity, and interprets the data using
performance maps. Fuel is injected intermittently into the inlet ports. The PGM-FI also has a trailing throttle fuel cutoff and a self-diagnosis system.
[Olaf von Fersen (ed.): EIN JAHRHUNDERT AUTOMOBILTECHNIK • PERSONENWAGEN, VDI-Verlag, Düsseldorf 1986, . p. 263-264]
References
{{reflist
External links
Honda Article on PGM-FI in motorcycles
Honda engines
Motorcycle engines
Fuel injection systems