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Honda F engine | |
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Overview | |
Manufacturer | Honda |
Layout | |
Configuration | Naturally aspirated Inline-4 |
Displacement | 1.8–2.3 L (1,849–2,254 cc) |
Cylinder bore |
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Piston stroke |
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Cylinder block material | Cast iron, Aluminum |
Cylinder head material | Aluminum/magnesium |
Valvetrain | SOHC, DOHC 4 valves x cyl. with VTEC (on some versions) |
Compression ratio | 8.8:1-11.7:1 |
RPM range | |
Max. engine speed | 9,200 |
Combustion | |
Fuel system | |
Fuel type | Gasoline |
Cooling system | Water-cooled |
Output | |
Power output | 105–240 PS (77–177 kW; 104–237 bhp) |
Torque output | 143–220 N⋅m (105–162 lb⋅ft) |
The Honda F-Series engine was considered Honda's "big block" SOHC inline four, though lower production DOHC versions of the F-series were built. It features a solid iron or aluminum open deck cast iron sleeved block and aluminum/magnesium cylinder head.
This engine was also used in the Rover 618i, assembled in Swindon at the Honda facility.
This engine was used for the Honda Accord European (CG8,CH6) from 1998 to 2002 VTEC S. Japan use variant (F18B) in (CD3,CF3) 1.8 VTS/VTE, from 1993 to 2002
The F18B2 won the 1.8L category of the International Engine of the Year competition for 2000.
This engine series was used in the Accord, Ascot Innova and Prelude in Japan and Europe. The DOHC F20A was also derived from this engine (see below).
This engine also spawned many variants, according to market, but the specs remain largely similar.
The F20A5 is used in the CB3 and CB4 Chassis.
Used in the Honda Accord Coupe (CD9) (1994-1997) and the Honda Accord Aerodeck (CE2) (Wagon) (1994-1997) Produced for the Netherlands, Belgium, France, Germany, Switzerland and Luxembourg
All the models that came with the F20B3 had a 5 speed manual gearbox.
This engine series is similar to the F20A above, used in the Honda Accord CC7 (1993-1996) and CE8 (1996-1998) in Europe. Also the Rover 620i (1993-1999)
This engine is the low compression brother of F20Z1. This engine was used in the same models as the F20Z1.
This engine series was used in the Honda Accord and Honda Prelude S. Aside from differences in tuning, these engines are substantially similar.
This engine was used in the 1994-1997 Honda Accord EX (1993 in JDM Accord models 2.2VTE, VTL & VTS) and the 1997 Acura CL. It was the first F-series engine to feature VTEC.
This engine was used in the European Accord known as the Honda Aerodeck.
The F22B2, F22B3, F22B6 and F22B8 are similar, though their exhaust headers vary between each.
This engine was used in the 1998-2002 Honda Accord LX, EX, and SE, LEV models, and in the Acura 2.3CL in North America.
Acceleration 0-60 mph (97 km/h) for the 4-cylinder models is improved (around the mid-9-second mark), with comparable fuel efficiency to its predecessor: 23 mpg‑US (10 L/100 km; 28 mpg‑imp)/city and 30 mpg‑US (7.8 L/100 km; 36 mpg‑imp)/hwy for LX and EX models with automatic transmissions. Emissions of Non-Methane Organic Gases (NMOG), also known as unburned hydrocarbons, produced during engine warm-up are considerably lower. The LX and EX engines produce less than 0.075 grams per mile, qualifying them for California LEV (Low-Emission Vehicle) status. In California, the Accord EX with the available automatic transmission will produce less than 0.03 grams per mile of NMOG, qualifying it as the first gasoline-powered vehicle to reach ULEV (Ultra-Low Emission Vehicle) status. The five-main bearing block is high-pressure die-cast from aluminum alloy. The walls of the block extend below the centerline of the crankshaft, which helps stiffen the bottom end. FEM (Finite Element Method) computer analysis was used to arrive at optimum thicknesses for the block ribs and walls in order to minimize engine vibration. Additional bottom-end rigidity comes from a larger, stronger bearing-cap beam that ties directly into the cylinder-block skirt. An aluminum-alloy stiffener has been added between the transmission case and the block, just behind the bearing carrier. The stiffener serves to tie the block and transmission together into a single, reinforced unit. FEM was also used to design this stiffener so that it would not only stiffen the area, but also help minimize high-frequency engine vibration. Finite-element analysis of the Accord's piston design by Honda engineers yielded a new ultra-short, lightweight skirt design, which is very rigid and resistant to vibration and piston slap. Like the V-6 engine the pistons are gravity-cast aluminum alloy and utilize full-floating wrist pins in order to minimize noise. The engine's drop-forged single-plane steel crankshaft and connecting rods have been designed to be stronger and operate with less friction, much like the V-6 components. The I-section, drop-forged steel connecting rods have a completely new design and are considerably lighter than their predecessors (475 g vs. 578 g), which helps to minimize vibration. Big end-bearing journal diameter has been reduced from 48 to 45 mm (1.9 to 1.8 in). Rod thickness is down from 24 to 20 mm (0.94 to 0.79 in) and the bolt size is smaller. Like the V-6 rod bolts, those of the 4-cylinder engine are torqued to the plastic region of the bolt material in order to ensure a solid union between the bearing cap and the connecting rod. The engine block incorporates the Honda-designed second-order balance system that cancels the inertial forces common to large-displacement 4-cylinder engines. The system consists of a balance shaft on either side of and parallel to the crank-shaft, 81 mm (3.19 in) above its centerline. Driven by a toothed belt, these balance shafts rotate in same directions at twice engine speed. Eccentric weights built into the shafts generate inertial forces that counteract the second-order forces created by the motion of the pistons and connecting rods. This Honda system minimizes vibration in the entire rpm range.
Cylinder Head
The 16-valve, single-overhead-camshaft cylinder head features four valves per cylinder and pentroof combustion chambers. Individual valves are smaller and lighter in 4-valve heads, which allows the engine to be revolved to a higher rpm, helping to extend the engine's power range. Valve actuation is via rocker arms and a hollow, belt-driven single overhead camshaft. The single-over-head-camshaft design requires less under-hood space than the more conventional dual overhead camshafts normally used with 16-valve, 4-cylinder engines. The adoption of a sophisticated knock control system optimizes ignition timing and allows for a higher compression ratio (9.3:1 from 8.8:1). Unleaded regular fuel is specified.
Revised Intake System
The intake system was simplified in shape to reduce induction resistance and noise. A larger twin-chambered air box designed to dampen resonant intake tract noise replaces the previous Accord's smaller, single-chamber damper. The new box is 10.7 liters in capacity, compared to the older unit's 8.2 liters. The larger box also eliminates the need for a second resonant-frequency damper and an additional side branch. The 2.3-liter Accord 4-cylinder engine intake manifold has been redesigned to add more power and lower emissions. The individual cast-aluminum runners have revised dimensions to better take advantage of the different air-flow characteristics of the 2.3-liter engine. A larger plenum chamber reduces induction noise and the incorporation of exhaust gas recirculation (EGR) ports into the plenum, upstream of the throttle plates, eliminates the need for a separate fitting and port in each intake runner.
Low vs. High Speed Operation
During low-rpm operation, only one intake valve (primary) opens, allowing air and fuel into the combustion chamber. The other intake valve (secondary) has only a slight amount of lift and its timing is staggered. As a result, the air-fuel charge drawn through the open intake valve undergoes a swirl effect. The swirl creates a stratified charge with a rich mixture near the spark plug for good light-off, and a progressively leaner mixture toward its periphery. This stratified charge, combined with improved EGR control, results in lower emissions especially during the critical warm-up period, and better fuel economy. Low-friction, roller-bearing rocker arms are used to help reduce friction and improve engine efficiency, except the secondary intake valve rocker arm does not have a roller-bearing. At high speed, as calculated by the ECU based on several inputs, a VTEC oil control valve is energized and oil pressure is routed to the small piston train in each 3 arm set of intake rocker arms. The pistons shift slightly which locks all three rocker arms together. Both intake valves then move together on the center rocker arm cam profile which changes intake valve timing and dwell and increases airflow into each cylinder. Springs in the piston train return the pistons back to their low rpm positions when the oil pressure is removed. Each center rocker arm is held against its cam lobe by an anti-free motion spring during low speed operation.
Emissions
NVH
Transmission
Low Speed Operation | Low Speed Operation | High Speed Operation | All Conditions | |
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Primary Intake Valve | Secondary Intake Valve | Both Intake Valve | Exhaust Valve | |
Valve Opens | 24° ATDC | 26° ATDC | 0° TDC | 30° BBDC |
Valve Closes | 23° ABDC | 76° BBDC | 36° ABDC | 15° BTDC |
Lift | 7 mm (0.28 in) | 1.8 mm (0.071 in) | 10 mm (0.39 in) | 9 mm (0.35 in) |
This engine was used in the 1998-2002 Honda Accord ULEV models. It is substantially similar to the F23A1, but features ULEV certification with a slight reduction of power: 148 hp (110 kW) with a maximum torque of 204 N⋅m (150 lb⋅ft). This engine has a different exhaust manifold, a more restrictive intake manifold, and a 32-bit ECU that uses an AFR (Air Fuel Ratio) oxygen sensor when compared to the F23A1.
This engine was used in the 1998-2002 Honda Accord DX, the 1998-2002 Honda Accord LXi in New Zealand and the 2002 Honda Accord LX VP (value package) in North America.
This engine was substantially similar to the F23A1. It was used in the 1998 Honda Odyssey, the 1998-1999 Isuzu Oasis, and EUDM Honda Shuttle.[ citation needed ]
Bore 86 mm × 97 mm (3.39 in × 3.82 in). Compression ratio: 9.3:1
This engine was used in the Honda Accord sixth (CL3 - Europe) (2001-2003).
Bore 86 mm × 97 mm (3.39 in × 3.82 in). Compression ratio: 9.3:1
This engine was used in the 1990–1993 CB3 and CB4 Honda Accord 2.0Si, Honda Prelude Si - SR JDM-EDM and Honda Ascot Innova.
This engine series was used in the 1997-2001 CF4, CF5, CF9, CL3 Honda Accord and Honda Torneo from Japan. It uses a DOHC VTEC cylinder head similar to the H22A found in the Prelude but was designed to comply with many countries' sub-2.0 liter tax. The automatic transmission versions received the lower hp version 180 hp (134 kW; 182 PS), as it was tuned for more mid-range torque than its manual transmission counterpart. The F20B manual version also utilized bigger cams, intake and throttle body from the H22 type S.
This engine was a radical departure from previous F engines, and only shared basic dimensions such as bore spacing. It was designed specifically for the Honda S2000 and shares some engineering with the Honda K engine. A long-stroke F22C1 variant was also produced.
This engine was a reworked version of the F20C, having a new rod stroke ratio and the redline was dropped to 8,000 rpm to produce better low end torque. The camshafts were also revised along with valve spring and retainers. All these changes increased the peak torque by 6%, however the power output stayed the same.
This engine was used in the mk4 1992–1996 Honda Prelude Si in Japan. It is similar to the H23A. The mk5 1997 Honda Prelude also used this engine in first years of manufacture sold as Si only in Japan.
The B-series are a family of inline four-cylinder DOHC automotive engines introduced by Honda in 1988. Sold concurrently with the D-series which were primarily SOHC engines designed for more economical applications, the B-series were a performance option featuring dual overhead cams along with the first application of Honda's VTEC system, high-pressure die cast aluminum block, cast-in quadruple-Siamese iron liners.
The Mitsubishi 6A1 engine is a series of piston V6 engines from Mitsubishi Motors, found in their small and medium vehicles through the 1990s. They ranged from 1.6 to 2.5 L in size, and came with a variety of induction methods and cylinder head designs and configurations.
The Mitsubishi Astron or 4G5/4D5 engine, is a series of straight-four internal combustion engines first built by Mitsubishi Motors in 1972. Engine displacement ranged from 1.8 to 2.6 litres, making it one of the largest four-cylinder engines of its time.
The Mitsubishi Sirius or 4G6/4D6 engine is the name of one of Mitsubishi Motors' four series of inline-four automobile engines, along with Astron, Orion, and Saturn.
The Mitsubishi 4G9 engine is a series of straight-4 automobile engines produced by Mitsubishi Motors. All are 16-valve, and use both single- and double- overhead camshaft heads. Some feature MIVEC variable valve timing, and it was the first modern gasoline direct injection engine upon its introduction in August 1996.
Honda's first production V6 was the C series; it was produced in displacements from 2.0 to 3.5 liters. The C engine was produced in various forms for over 20 years (1985–2005), having first been used in the KA series Legend model, and its British sister car the Rover 800-series.
The Honda B20A engine series, known as the B20A and B21A, was an inline four-cylinder engine family from Honda introduced in 1985 in the second-generation Honda Prelude. Also available in the contemporary third-generation Honda Accord in the Japanese domestic market, along with the Accord-derived Vigor, the B20A was Honda's second line of multivalve DOHC inline four-cylinder engines behind the "ZC" twin-cam variant of the ordinarily SOHC D-series, focused towards performance and displacing 2.0 to 2.1 litres.
The E-series was a line of inline four-cylinder automobile engines designed and built by Honda for use in their cars in the 1970s and 1980s. These engines were notable for the use of CVCC technology, introduced in the ED1 engine in the 1975 Civic, which met 1970s emissions standards without using a catalytic converter.
The J-series is Honda's fourth production V6 engine family introduced in 1996, after the C-series, which consisted of three dissimilar versions. The J-series engine was designed in the United States by Honda engineers. It is built at Honda's Anna, Ohio, and Lincoln, Alabama, engine plants.
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 features cast iron block and aluminum SOHC head design with three valves per cylinder for a total of 12 valves. It was available in carbureted and fuel-injected configurations
The Honda D series inline-four cylinder engine is used in a variety of compact models, most commonly the Honda Civic, CRX, Logo, Stream, and first-generation Integra. Engine displacement ranges between 1.2 and 1.7 liters. The D Series engine is either SOHC or DOHC, and might include VTEC variable valve lift. Power ranges from 66 PS (49 kW) in the Logo to 130 PS (96 kW) in the Civic Si. D-series production commenced in 1984 and ended in 2005. D-series engine technology culminated with production of the D15B 3-stage VTEC (D15Z7) which was available in markets outside of the United States. Earlier versions of this engine also used a single port fuel injection system Honda called PGM-CARB, signifying the carburetor was computer controlled.
The Suzuki G engine is a series of three- and four-cylinder internal combustion engines manufactured by Suzuki Motor Corporation for various automobiles, primarily based on the GM M platform, as well as many small trucks such as the Suzuki Samurai and Suzuki Vitara and their derivatives.
The Honda H engine was Honda's larger high-performance engine family from the 1990s and early 2000s. It is largely derived from the Honda F engine with which it shares many design features. Like Honda's other 4-cylinder families of the 1980s and 1990s, It has also enjoyed some success as a racing engine, forming the basis of Honda's touring car racing engines for many years, and being installed in lightweight chassis for use in drag racing. The F20B is a part of the F-series family of engines; it is basically a cast-iron sleeved down destroked version of the H22A. It was developed by Honda to be able to enter into the 2-liter class of international racing.
The L-series is a compact inline-four engine created by Honda, introduced in 2001 with the Honda Fit. It has 1.2 L (1,198 cc), 1.3 L (1,318 cc) and 1.5 litres (1,497 cc) displacement variants, which utilize the names L12A, L13A and L15A. Depending on the region, these engines are sold throughout the world in the 5-door Honda Brio Fit/Jazz hatchback Honda Civic and the 4-door Fit Aria/City sedan. They can also be found in the Japanese-only Airwave wagon and Mobilio MPV.
The Honda R engine is an inline-four engine launched in 2006 for the Honda Civic (non-Si). It is fuel injected, has an aluminum-alloy cylinder block and cylinder head, is a SOHC 16-valve design and utilizes Honda's i-VTEC system. The R series engine has a compression ratio of 10.5:1, features a "drive by wire" throttle system which is computer controlled to reduce pumping losses and create a smooth torque curve.
The MA is a straight-4 SOHC 0.9 L, 1.0 L, or 1.2 L engine first introduced in 1982 by Nissan, intended primarily for the K10 series Micra/March model. It shares design similarities with the older E engine, with an 8-valve hemispherical cylinder head but differs in that it uses an aluminium cylinder block. Unusually, the specified ignition timing for the MA10 running on the specified 90 RON gasoline was 2 degrees after top dead centre, reflecting a very high flame speed in the compact combustion chambers.
The Mitsubishi 3G8 engine is a range of three-cylinder powerplant from Mitsubishi Motors, introduced in the fifth generation of their Mitsubishi Minica kei car. In common with other contemporary engines in the class, it could be specified with many advanced technologies despite its diminutive size, including multi-valve cylinder heads and double overhead camshafts. The top-of-the-line Dangan ZZ variant was also the first kei car to benefit from turbocharging. In 1987 Mitsubishi was the first manufacturer to supercharge a kei vehicle, and in 1989 became the world's first production car to feature five valves per cylinder, ahead of similar developments by Bugatti, Audi, Ferrari and Toyota.
The N series is Honda's first automotive diesel engine, an inline-four for medium-sized vehicles. It uses common rail direct injection, which Honda brands as i-CTDi. The most notable feature is the aluminium block, which uses proprietary technology in the manufacturing process to provide light weight and high rigidity. Roller chains drive two overhead camshafts. A variable-geometry turbocharger and intercooler are used.
The Honda P engine is an inline three-cylinder gasoline engine first designed for use in Honda kei cars. The P engine was first used in the fourth generation Honda Life, as a successor to the Honda E07A engine. The P engine series was initially produced in only one displacement variant: 658 cc, either naturally aspirated or turbocharged. 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.
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 as of 2020 the E07Z engine still saw use in the Acty truck.