Circle L engine
Circle L engine | |
---|---|
Overview | |
Emissions target standard | Euro 3, 4 & 5 |
Emissions control systems | EGR |
Chronology | |
Successor | MDE engine |
The Circle L is an
History
In the late nineties the Japanese company Isuzu, which was known for the efficiency of its diesel engines, collaborated with General Motors on a new diesel engine for the European market for Opel and Vauxhall. For this purpose it opened a new plant in the city of Tychy, in Poland, called Isuzu Motor Polska. Engine blocks were supplied from Japan.[1] At the time the engine was developed, GM owned a 49% share of Isuzu, but later dissolved its stake and reacquired a 12% share for US$80 million in exchange for exclusive rights to the Circle L engine.[2]
Characteristics
For reasons of economy, GM and Isuzu chose not to make an engine from scratch, but rather evolved the new engine from an existing base. Thus, the Isuzu 4EE1 1.7-liter was chosen and developed into the "Circle L" family of engines, also known as the 4EE2. The engine kept the same dimensions of 1.7 4EE1. The main differences are in the DOHC
Y17DT
The abbreviation Y17DT identifies the very first Circle L engine: As already mentioned it is a Euro 3 engine with a compression ratio of 18.4:1. The unit has Denso engine management, as in most Circle L engines. A Mitsubishi TD025 turbocharger is fitted, as is an exhaust gas recirculation system. The Y17DT reaches 75 PS (55 kW; 74 hp) at 4400 rpm, with a torque of 165 N⋅m (122 lb⋅ft) between 1800 and 3000 rpm. This engine was fitted in:
- Opel Corsa C 1.7 DTI 16V 75 HP (2000-03);
- Opel Combo C 1.7 DTI 16V (2002-04);
- Opel Astra G 1.7 DTI 16V (1999-2003);
- Opel Meriva 1.7 16V DTI (2003-05);
Y17DTL
The engine Y17DTL is a reduced power variant of the Y17DT, to which it differs in the absence of an intercooler. Maximum power is reduced to 65 PS (48 kW; 64 hp) at 4400 rpm, and maximum torque to 130 N⋅m (96 lb⋅ft) between 2000 and 3000 rpm. This engine, also Euro 3, was fitted in:
- Opel Corsa C 1.7 16V 65 HP (2000-03);
- Opel Combo C 1.7 DI 16V (2002-04);
Z17DTL
The engine Z17DTL was one of the first common rail
- Opel Astra G 1.7 16V CDTI (2003-04)
- Opel Astra H 1.7 CDTI (2004- 05)
Z17DT
The engine Z17DT was one of the first common rail turbo diesel engines used as a "CDTi" badge by Opel. With a variable-geometry turbocharger and a compression ratio of 18.4:1, can reach the maximum power of 101 PS (74 kW; 100 hp) at 4400 rpm, with a maximum torque of 240 N⋅m (177 lb⋅ft) at 2300 rpm. It was fitted in:
- Opel Corsa C 1.7 16V CDTI 101CV (2003-06);
- Opel Meriva A 1.7 CDTi 16v 101CV (2003-05);
This engine meets the Euro 4 directive.
Z17DTH and A17DT
This motor is similar to the one signed Z17DT it replaces, and features a number of minor improvements. The power is unchanged at 101 PS (74 kW; 100 hp) at 4400 rpm, but the torque increases to 260 N⋅m (192 lb⋅ft) at 2300 rpm. It was fitted in
- Opel Meriva A 1.7 CDTI A (2005-10),
- Opel Astra H 1.7 CDTI (2004-08),
- Opel Combo C 1.7 CDTI (2004-2010).
- Opel Corsa C 1.7 CDTI (2003-06)
With the exception of the Opel Astra 1.7 CDTI 16V, this car had a
- Opel Meriva B 1.7 CDTI (2010-13)
Z17DTR and A17DTR
These are more powerful variants (but not the most powerful) of the Circle L engines. They also meet the Euro 4 standard, but feature a slightly lower compression ratio of 18.2:1. As in all Euro 4 engine an exhaust gas recirculation system is present. The maximum power reaches 125 PS (92 kW; 123 hp) at 4000 rpm, with a peak torque of 280 N⋅m (207 lb⋅ft) between 2000 and 2700 rpm. This engine was fitted in:
- Opel Corsa D 1.7 CDTI 16V 125hp (2006-11);
- Opel Corsa D GSi 1.7 CDTI ( 2007 -11);
- Opel Meriva 1.7 CDTI 16V 125hp (2006-10);
- Opel Astra 1.7 16V 5p CDTI 125hp (2007-09);
- Opel Astra H SW 1.7 CDTI 16V 125hp (2007-10);
- Opel Astra GTC 1.7 CDTI 16V 125hp (2007- 11 ).
The abbreviation A17DTR identifies the
- Opel Zafira B 1.7 CDTI 16V 125hp ( 2009 -14);
- Opel Astra J 1.7 CDTI 125hp (2010-11).
A17DTS
In 2010 the engine A17DTR was developed into the A17DTS: here the engine power has been increased to 130 PS (96 kW; 128 hp) at 4000 rpm, while the maximum torque is increased to 300 N⋅m (221 lb⋅ft) between 2000 and 2500 rpm. This variant has been fitted in:
- Daewoo Lacetti 1.7 VCDi (2011-15);
- Opel Corsa D 1.7 CDTI (2011-13);
- Opel Astra J 1.7 CDTI 130cv (2011-14);
- Opel Meriva B 1.7 CDTI 130cv (2010-13);
- Opel Mokka 1.7 CDTI (2012-15);
- Chevrolet Cruze 1.7 VCDi (2010-15);
- Chevrolet Trax 1.7 D (2013-15).
Z17DTJ and A17DTJ
This engine was the basis for the 1.7 Ecoflex: Maximum power reaches 110 PS (81 kW; 108 hp) at 3800 rpm, with a maximum torque of 260 N⋅m (192 lb⋅ft) at 2000 rpm. It is fitted in:
- Opel Astra H 1.7 CDTI 16v 110 bhp (2007-09);
- Opel Astra J 1.7 CDTI 16v 110 bhp (2010-15);
- Opel Astra GTC H / SW 1.7 CDTI 16v 110 bhp (2007-10 );
- Opel Zafira B 1.7 CDTi 16v 110HP (2007-08).
A17DTC and A17DTE
This is the second diesel engine in the Opel engine range to be included in the EcoFlex range (the first was a 1.3 Multijet engine from Fiat). Introduced in 2008, is based on the Z17DTJ engine developed simultaneously, and is characterized by a reduction of friction of the moving parts in order to optimize the thermal efficiency and meet the stricter Euro 5 standard. Outputs are identical to those of the Z17DTJ. It is fitted in:
- Opel Meriva B 1.7 CDTi 16v 110HP (from 2010);
- Opel Zafira B 1.7 CDTi 16v 110HP (2008-14);
- Opel Astra J 1.7 CDTI 16v 110HP (2010-14).
Honda
The Honda version features
- Honda Civic (Europe)
4EE2
The 4EE2 produces 74 hp (55.2 kW) at 4400 rpm and 165 N⋅m (122 lb⋅ft) at 1800 rpm. Applications:
- Opel Corsa
- Opel Meriva
- Opel Astra
- Opel Zafira
- Opel Vectra
- Cummins MerCruiser Recreational Sterndrive, Inboard or Jet (Boat Engine)
See also
References
- ^ a b "Popular engines: ISUZU 1.7 4EE2". Auto Maniac. March 23, 2017. Retrieved 20 October 2023.
- ^ Zachary, Katherine (June 1, 2003). "Isuzu's Turnaround". Wards Auto. Retrieved 20 October 2023.
External links
- Isuzu Builds 1,000,000th Circle-L Archived 2011-05-22 at the Wayback Machine
- Mercruiser Brochure
- Mercruiser Brochure
- Mercruiser Brochure
- Mercruiser/Isuzu Venture Article Archived 2006-07-21 at the Wayback Machine