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.
Former Japanese automobile engines
For the Honda E series 3-cylinder engine used in Japanese kei cars, see Honda E0 engine.
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The EA-series is a water-cooled 356cc (21.7cuin) inline two-cylinder engine replacing the N360's air-cooled 354cc (21.6cuin) engine. An SOHC design with a timing belt (replacing the chain used in the N360 engine), the EA was first seen in the 1971 Honda Life. This engine was derived from the air-cooled engine in the Honda CB450 and was adapted for water-cooled application. The displacement was reduced to be in compliance with Japanese kei car legislation that stipulated maximum engine displacement. Bore and stroke were 67mm ×50.6mm (2.64in ×1.99in). A version producing 30PS (22kW) at 8,000rpm was installed in the Honda Life, while the Honda Z and the Honda Life Touring (introduced in May 1972) received a twin-carb model with 36PS (26kW) at a heady 9,000rpm.[1]
The ED series introduced the CVCC technology; it is otherwise the same as the contemporary EC engine. It displaced 1.5L; 90.8cuin (1,488cc) and used an SOHC 12-valve design. Output with a 3 barrel carburetor was 53PS (39kW; 52hp) at 5000rpm and 9.4kg⋅m (92N⋅m; 68lb⋅ft) at 3000rpm.
The EE series applied the CVCC technology to the 1.2L (1,237cc; 75.5cuin) and used an SOHC 12-valve design. It was replaced by the 1.3-liter EJ engine in 1978. The EE engine produces 63PS (46kW) at 5500rpm and 9.5kg⋅m (93N⋅m; 69lb⋅ft) at 3500rpm.[3]
The EG displaced 1.6L; 97.5cuin (1,598cc) and was an SOHC 8-valve engine with a 2 barrel carburetor. Output was 69PS (51kW; 68hp) @ 5000rpm and 11.7kg⋅m (115N⋅m; 85lb⋅ft) @ 3000rpm.
EG
1976-1978 Honda Accord Non USDM
EH
The water-cooled SOHC two-cylinder EH was first seen installed in the first generation Honda Acty truck introduced in July 1977, and later in the 1985 Honda Today. It was based on one bank of cylinders from the horizontally opposed four used on the Honda Gold Wing GL1000 motorcycle, with which it shared the 72mm (2.83in) bore. The horsepower rating of the 545cc (33.3cuin)72mm ×67mm (2.83in ×2.64in) engine was 28PS (21kW) at 5,500rpm, and 4.2kg⋅m (41N⋅m; 30lb⋅ft) at 4,000rpm. When installed in the Today, max power was raised to 31PS (23kW) at the same revs, and torque at 4.4kg⋅m (43N⋅m; 32lb⋅ft), with a compression ratio of 9.5:1.[5]
The EK[6] was an SOHC 12-valve (CVCC) engine, displacing 1.8L (1,751cc). Output varied (see below) as the engine itself was refined. This was the last CVCC configuration engine manufactured by Honda.
Displaced 1.8L (1,751cc)
Bore & Stroke 77mm ×94mm (3.03in ×3.70in)
compression ratio: 8.8:1
design with a 2 barrel carburetor.
Fuel control: electric fuel pump
Power: 97PS (71kW; 96hp) 5,500rpm
Torque: 14.3kg⋅m (140N⋅m; 103lb⋅ft) at 3,000rpm
Cast iron block & aluminum cylinder head
Three barrel Keihin carburetor (all were automatic choke)
Electronic ignition (Nippon Denso or Tek Electronics)
Oil cooler (or provision for this in the block)
Cylinder head iterations:
Six port cylinder head (4 intake port / 2 exhaust ports) & IEEIIEEI valve order for 1979 & 1980 49 state
Eight Port cylinder head (4 intake port / 4 exhaust ports) & IEEIIEEI valve order for 1980 (California only) and 1981 (50 states)
Eight Port cylinder head (4 intake port / 4 exhaust ports) & EIEIIEIE valve order from 1982 to end of CVCC production (1985)
Power: 6-port output was 73PS (54kW; 72hp) at 4500rpm and 13kg⋅m (127N⋅m; 94lb⋅ft) at 3,000rpm, while the original 8-port head raised this to 76PS (56kW; 75hp) at 4500rpm and 13.3kg⋅m (130N⋅m; 96lb⋅ft) at 3000rpm. The revised 4-port (82 & later) had another slight horsepower increase.
EK9 is not related to the EK engine; EK is also the chassis code for several versions of the sixth generation Honda Civic. EK9 is the chassis code for 1997-2000 Honda Civic Type R.
EL
The EL displaced 1.6L; 97.8cuin (1,602cc) and was an SOHC eight-valve engine with a two-barrel carburetor. Output in North American configuration is 79PS (58kW; 78hp) at 5,000rpm and 12.8kg⋅m (126N⋅m; 93lb⋅ft) at 3,000rpm.
The EN displaced 1.3L; 81.5cuin (1,335cc). It had a single overhead cam and eight-valve head, and was fitted to Civics in all markets aside from the United States domestic market. In Europe it also found a home in the Honda Ballade-based Triumph Acclaim. Both block and head are from aluminium.
EN1
1980-1983 Honda Civic, single carb, 61PS (45kW; 60bhp)
sold as a 12-valve CVCC-II in Japan and as a simple eight-valve unit in Europe and Asia,
was only used in the AA/VF/FA series City/Jazz from 1981 until 1986.[7][8]
It was available as a normally aspirated carburated version or with Honda's own PGM-FI fuel injection as one of a very few turbocharged engines built by Honda.
The Japanese market CVCC engine was also known as COMBAX, an acronym of COMpact Blazing-combustion AXiom. The E-series were tuned for economy, with higher gearing and later on with computer-controlled variable lean burn.
As of March 1985, the naturally aspirated ER engines gained composite conrods (a world first in a production car), lighter and stronger these helped further reduce fuel consumption.
The lower powered engines in the commercial "Pro" series had a lower compression, a mechanically timed ignition rather than the breakerless setup found in the passenger cars, and a manual choke. The ER had five crankshaft bearings and the overhead camshaft was driven by a cogged belt.
Carburetor versions used either a single or 2bbl downdraft Keihin. The turbocharger in the Turbo and Turbo II was developed together with IHI, the Turbo II being equipped with an intercooler and a computer-controlled wastegate.[7]
ER1-4 Honda City
ES
The ES displaced 1.8L; 111.6cuin (1,829cc). All ES engines were SOHC 12-valve engines. The ES1 used dual sidedraft carburetors to produce 102PS (75kW; 101hp) @ 5500rpm and 14.4kg⋅m (141N⋅m; 104lb⋅ft) @ 4000rpm. The ES2 replaced this with a standard 3 barrel carburetor for 87PS (64kW; 86hp) @ 5800rpm and 13.7kg⋅m (134N⋅m; 99lb⋅ft) @ 3500rpm. Finally, the ES3 used PGM-FI for 102PS (75kW; 101hp) @ 5800rpm and 14.9kg⋅m (146N⋅m; 108lb⋅ft) @ 2500rpm.
The ET displaced 1.8L; 111.6cuin (1,829cc) and was an SOHC 12-valve engine. ET1 had a single, downdraft carb with 4-1 exhaust manifold. The ET2 with dual sidedraft carburetors and 4-2-1 exhaust manifold produced 100PS (74kW; 99hp) at 5,500rpm and 14.4kg⋅m (141N⋅m; 104lb⋅ft) at 4,000rpm. JDM versions included a triple-barrel carburetted version for the Accord (110PS or 81kW or 108hp at 5,800rpm) and one with Honda PGM-FI which produced 130PS (96kW; 128hp) at 5,800rpm.[12]
The EV displaced 1.3L; 81.9cuin (1,342cc) 74mm bore, 78mm stroke and was an SOHC 12-valve design. 3 barrel carburetors produced 61PS (45kW; 60hp) at 5,500rpm and 10.1kg⋅m (99N⋅m; 73lb⋅ft) at 3,500rpm for the US market. The JDM version, featuring 12 valves and auxiliary CVCC valves, produced 80PS (59kW; 79hp) at 6,000rpm and 11.3kg⋅m (111N⋅m; 82lb⋅ft) at 3,500rpm. It was available in all bodystyles of the third generation Honda Civic.[13]
The final E-family engine was the EW, presented along with the all new third generation Honda Civic in September 1983. Displacing 1.5L; 90.8cuin (1,488cc), the EWs were SOHC 12-valve engines. Early 3 barrel EW1s produced from 58 to 76hp (43 to 57kW) and 11 to 11.6kg⋅m (108 to 114N⋅m; 80 to 84lb⋅ft). The fuel injected EW3 and EW4 produced 92PS (68kW; 91hp) at 5,500rpm and 12.8kg⋅m (126N⋅m; 93lb⋅ft) at 4,500rpm. The "EW" name was replaced by the Honda D15 series, with the EW (1, 2, 3, 4, and 5) renamed to D15A (1, 2, 3, 4, and 5) in 1987. It also received a new engine stamp placement on the front of the engine like the "modern D series" (1988+).
similar to the EW1, Fuel injected CVCC 12-Valve 4 Aux valves. A third throttle plate in the throttle body supplied intake air to a 5th injector which powered the CVCC ports, The rated power is different between the Civic and the CR-X: the Civic makes 100PS (74kW; 99hp) at 5800rpm and 13.2kg⋅m (129N⋅m; 95lb⋅ft) torque at 4000rpm, the CR-X made 110PS (81kW; 108hp) at 5800rpm and 13.8kg⋅m (135N⋅m; 100lb⋅ft) torque at 4500rpm. Differences in power are largely down to a more efficient exhaust system on the CR-X it used a factory cast iron 4-2-1 extractor went through a catalytic converter further down the exhaust system and had twin exit tail pipes. The Civic had a short 4-1 design into a catalytic converter and single pipe exit. There was a revised intake manifold for vehicles produced in 1986 and 1987. The EW5 was only available in Japan. It came in the following models: CR-X 1.5i, Civic 25i Hatchback, Ballade CRi Sedan.
ZA
The ZA1 and ZA2 are anomalously named, but closely related to the 1.3-litre EV. With a shorter stroke but the same bore 74mm ×69mm (2.91in ×2.72in), this 1.2L; 72.4cuin (1,187cc) shared most of the EV's characteristics. It was only sold in the third generation Civic in European and various smaller markets where the taxation structure suited this version. The high octane version produces 62PS (46kW; 61hp) at 6000rpm and 9.0kg⋅m (88N⋅m; 65lb⋅ft) at 4000rpm.[14] There was also a low-octane model, producing 55PS (40kW; 54hp) at 6000rpm.
360cc: Nippon 軽自動車 Memorial 1950→1975[Nippon Kei Car Memorial 1950-1975] (in Japanese). Tokyo: Yaesu Publishing. 2007. pp.128–129. ISBN978-4-86144-083-0.
自動車ガイドブック[Japanese Motor Vehicles Guide Book 1978/1979] (in Japanese), vol.25, Japan: Japan Automobile Manufacturers Association, 1978-10-10, p.199, 0053-780025-3400
自動車ガイドブック[Automobile Guide Book 1976/1977] (in Japanese), vol.23, Japan: Japan Automobile Manufacturers Association, 1976-10-20, p.149, 0053-760023-3400
How to Rebuild Your Honda Car Engine by Tom Wilson, copyright 1985, HP Books, ISBN0-89586-256-5
Car Graphic: Car Archives Vol. 11, '80s Japanese Cars (in Japanese). Tokyo: Nigensha. 2007. p.144. ISBN978-4-544-91018-6.
Auto Katalog 1985. Stuttgart: Vereinigte Motor-Verlage GmbH & Co. KG. 1984. pp.236–237.
According to "Honda City Turbo II" page in the Honda Auto Archive and Auto Katalog 1985, p 232. World Class Cars #2: Honda (p 121) lists compression as 7,4:1.
Kurki-Suonio, Hannu (1985-03-19). "Autotieto 1985" [Car specifications 1985]. Tekniikan Maailma (in Finnish). Vol.41, no.5/85. Helsinki: TM-Julkaisu. p.Automaailma 28. ISSN0355-4287.
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