The Honda P engine is an inline three-cylinder gasoline engine first designed for use in Honda

kei car Kei car (or , kanji: , "light automobile", ), known variously outside Japan as Japanese city car or Japanese microcar, is the Japanese vehicle category for the smallest highway-legal passenger cars with restricted dimensions and engine capacit ...

s. The P engine was first used in the fourth generation Honda Life, as a successor to the

Honda E07A engine The E0 series is a three-cylinder gasoline engine developed and manufactured by Honda, with a total displacement of 656 cc. The engine is intended for kei car applications. The E05A and E07A were partially replaced by the Honda P engine but ...

. The P engine series was initially produced in only one displacement variant: 658 cc, either naturally aspirated or

turbocharged In an internal combustion engine, a turbocharger (often called a turbo) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake gas, forcing more air into the engine in order to pro ...

(the legislated maximum displacement of engines used in kei cars is 660 cc). A turbocharged one-litre version, the P10A, has since been developed. The smaller version was discontinued in December 2013, when it was replaced by the new S07 series engine, but the P10A continues to be built in Thailand.

Design

The P-series engine was introduced in the fourth generation Honda Life in September, 2003. The engine uses a single overhead camshaft to drive two valves per cylinder (one intake, one exhaust, for a total of six). It also features the ''i-DSI'' ("intelligent dual and sequential ignition") spark ignition system, which utilizes two spark plugs per cylinder. The spark plugs fire sequentially, one after the other, in order to more completely burn the fuel charge for more power, lower fuel consumption and lower emissions. Fuel is delivered using Honda's

PGM-FI Programmed Fuel Injection, or PGMFI/PGM-FI, is the name given by Honda to a proprietary digital electronic fuel injection system for internal combustion engines with port injection. It is available since the early 1980s. This system has been impl ...

electronic

fuel injection Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of an injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All comp ...

system. An unusual feature of this engine's design is that it does not have a separate

exhaust manifold In automotive engineering, an exhaust manifold collects the exhaust gases from multiple cylinders into one pipe. The word ''manifold'' comes from the Old English word ''manigfeald'' (from the Anglo-Saxon ''manig'' anyand ''feald'' old and refe ...

. Instead the exhaust gasses collect in the passages of the

cylinder head In an internal combustion engine, the cylinder head (often abbreviated to simply "head") sits above the cylinders and forms the roof of the combustion chamber. In sidevalve engines, the head is a simple sheet of metal; whereas in more modern ov ...

itself and are fed directly into the

catalytic converter A catalytic converter is an exhaust emission control device that converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction. Catalytic converters are usually ...

. Honda claims this design helps to warm the catalyst quicker in order to more effectively filter out harmful emissions. The larger P10A shares an bore spacing and most other basic dimensions with the 1.5-liter four-cylinder NA engine, increasing parts commonality and simplifying manufacture.

Variants

P07A

*i-DSI SOHC 6 valves *Displacement: 658 cc *Bore × stroke (mm): 71.0 × 55.4 *Power: **September, 2003 - October, 2008: 38 kW (52 PS; 51 hp) at 6,700 rpm **November, 2008–2013: 38 kW (52 PS; 51 hp) at 7,100 rpm *Torque: **September, 2003 - October, 2008: 61 N·m (6.2 kgf·m; 45 lb·ft) at 3,800 rpm **November, 2008–2013: 60 N·m (6.1 kgf·m; 44 lb·ft) at 3,600 rpm *Used in: **

Honda Life The Honda Life is an automobile nameplate that was used on various kei car/city cars produced by Honda: passenger cars, microvans, and kei trucks. The first series of the nameplate was built between 1971 and 1974, with the nameplate revived in 19 ...

(JB5, JB6, JC1, JC2) **

Honda Zest The Honda Zest is a kei car released in 2006 by Honda. It is mechanically identical to the fifth generation Honda Life. Equipped with a turbo charged engine, 3 cylinders, and 4 doors, it was the first kei car available with optional side curtain ...

(JE1, JE2)

P07A (turbocharged)

*i-DSI SOHC 6 valves *Turbocharged *Displacement: 658 cc *Bore × stroke (mm): 71.0 × 55.4 *Power: 47 kW (64 PS; 63 hp) @ 6,000 rpm *Torque: 93 N·m (9.5 kgf·m; 69 lb·ft) @ 4,000 rpm *Used in: **

(JB7, JB8, JC1, JC2) **

(JE1, JE2)

P10A2

*i-VTEC Earth Dreams DOHC 12-valves *Turbocharged *Displacement: 988 cc *Bore × stroke (mm): 73.0 × 78.7 *Power: 95 kW (130 PS; 128 hp) @ 5,500 rpm *Torque: 200 N·m @ 2,250 rpm *Used in: **

Honda Civic The is a series of automobiles manufactured by Honda since 1972. Since 2000, the Civic has been categorized as a compact car, while previously it occupied the subcompact class. , the Civic is positioned between the Honda Fit/City and Honda Acc ...

hatchback (FK6; UK) **

sedan (China) ** Honda Crider/Envix (China)

P10A6

*i-VTEC Earth Dreams DOHC 12-valves *Turbocharged *Displacement: 988 cc *Bore × stroke (mm): 73.0 × 78.7 *Power: 91 kW (122 PS; 120 hp) @ 5,500 rpm *Torque: 173 N·m @ 2,000 – 4,500 rpm *Used in: **

Honda City The is a subcompact car which has been produced by the Japanese manufacturer Honda since 1981. The City was originally a 3-door hatchback/2-door convertible for the Japanese, European and Australasian markets. The 3-door City was retired in 199 ...

(GN1 and GN7; Thailand)

References

External links

Honda Motor Co.
(Official)

(Official)

(Official) {{DEFAULTSORT:Honda P Engine P engine Straight-three engines Gasoline engines by model