Question: The B-series automotive engines are sold concurrently with an engine used in the first-generation of what?
Context: The Honda Rafaga series CE4 and CE5 was a compact 4-door sedan sold only in Japan by Honda, introduced in January 1993, and used the same 5-cylinder engine that was used in the Honda Inspire and the Honda Vigor and shared a platform with the second generation CE series Honda Ascot.  "Rafaga" is Spanish for "gust" or "blustery".  The engine is installed longitudinally, the same configuration used in the Vigor and Inspire.  The Rafaga was third in Hondas hierarchy of sedans, and a sister car to the Ascot, which was sold at the "Honda Primo" dealership network.  The Rafaga was sold in Japan at "Honda Verno" dealerships, and was one level up from the Honda Integra.  As with other Honda products, the Rafaga used double wishbone suspension at the front and rear wheels.  The "2.5 S" trim level came with a front suspension upper strut brace in the engine compartment.  In Japan, the smaller G20A engine used regular grade fuel, while the larger G25A engine used premium grade fuel. The B-series are a family of inline four-cylinder DOHC/SOHC automotive engines introduced by Honda in 1989.  Sold concurrently with the D-series which were primarily SOHC engines designed for more economical applications, the B-series were aimed more as a performance option featuring dual and single-overhead cams along with the first application of Honda's VTEC system (available in some models).  To identify a Honda B-series engine, the letter B is normally followed by two numbers to designate the displacement of the engine, another letter, and in US-spec engines, another number.  The Japanese spec-engines are normally designated with a four character alphanumeric designation.  The B-series, the B20B variant in particular, is not to be confused with the earlier Honda B20A engine introduced in 1985 and primarily available in the Prelude and Accord-derived vehicles from 1985-1991.  While sharing some design elements and both being multivalve Honda four-cylinders, the B-series and B20A differ substantially in architecture, enough to be considered distinct engine families. The Detroit Diesel Series 51 was a two-stroke diesel engine built by General Motors, Detroit Diesel Division from 1951 to 1959.  Unlike other GM/Detroit Diesel engines, the 51 series designation did not refer to the cylinder displacement, but rather to the year it was introduced.  Two versions were produced, an inline two-cylinder (2-51, 108 cid ) and an inline four-cylinder model (4-51, 216 cid ).  This was accomplished by using loop scavenging ports for both intake and exhaust along with a mechanical blower.  This engine used a dry sleeve with 9 intake ports and three exhaust ports in that sleeve.  These sleeves were located in such a way that the exhaust ports lined up with exhaust ports in the block that were physically higher than the intake ports in the block.  This resulted in pressurized cool air being forced through the intake ports just after the exhaust started exiting (note that the exhaust ports in the sleeves were higher at the top than the intake ports while the bottom of all ports in the sleeve are at the same height.  The net compression ratio is 18:1.  Unlike a two cycle gasoline engine, the crankcase was not used to draw in the fuel/air mixture.  Instead, the blower forced air in the intake ports and fuel was injected by a camshaft actuated injector which was pressurized by a gear pump.  As fuel is injected just before top dead center, little unburned fuel is expelled in the exhaust, unlike a two-cycle gasoline engine.  The elimination of exhaust valves reduced the complexity and weight of the engine.  The power output and RPM of this engine was controlled by governing the intake air and controlling the opening of the injectors with shutdown accomplished by completely closing off the air intake.  The much lower weight of this engine compared to engines with valves made it quite suitable for applications where other engines of the same horsepower were not feasible.  Its uses include: Marine propulsion, generators, pumps, air compressors, road graders and other industrial uses.  It was never factory installed for automotive purposes but conversion kits and engines were made available for automotive use.  This engine design did not see widespread use due to not being able to reduce the exhaust noise to an acceptable level, as any exhaust restriction would have resulted in a reduction of power and efficiency.  It was a very fuel efficient engine with a high power output to fuel consumption ratio. The Subaru EJ engine is a series of four-stroke automotive engines manufactured by Subaru.  They were introduced in 1989, intended to succeed the previous Subaru EA engine.  The EJ series is the mainstay of Subaru's engine line, with all engines of this series being 16-valve horizontal flat-fours, with configurations available for single, or double-overhead camshaft arrangements (SOHC or DOHC).  Naturally aspirated and turbocharged versions are available, ranging from 96 to 320 horsepower.  These engines are commonly used in light aircraft, kit cars and engine swaps into air-cooled Volkswagens, and are also popular as a swap into the wasserboxer engined Volkswagen T3/Vanagon.  Primary engineering on the EJ series was done by Masayuki Kodama, Takemasa Yamada and Shuji Sawafuji of Fuji Heavy Industries, Subaru's parent company. Non-road engine (which may include non-road equipment and non-road vehicle) is an internal combustion engine or a gas turbine engine used for other purposes than being an engine of a vehicle operated on public roadways.  The term is commonly used by regulators to classify the engines in order to control their emission.  Non-road engines are used in an extremely wide range of applications which may include machinery and engines of vehicles in other modes of transportation with different fuel types such as gasoline and diesel fuel.  In many jurisdictions, the term non-road engine is assumed to refer to the engines that have mobility or portability which is separated from the term stationary engine.  The definition of non-road engine may explicitly exclude certain non-road vehicles such as aircraft, locomotives, and ocean-going marine vessels.  In Europe, the regulations are specifically clarified on the mobility by using the term non-road mobile machinery (NRMM).  In Australia, the definition includes some stationary engines such as electric generators and pumps. CVCC is a trademark by the Honda Motor Company for an engine with reduced automotive emissions, which stood for "Compound Vortex Controlled Combustion".  The first mention of Honda developed CVCC technology was done by Mr. Soichiro Honda February 12, 1971, at the Federation of Economic Organizations Hall in Otemachi, Chiyoda-ku, Tokyo.  Honda's engineers at the time, Mr. Date conferred with Mr. Yagi and Mr. Nakagawa about the possibility of creating lean combustion via a prechamber, which some diesel engines utilized.  The first engine to be installed with the CVCC approach for testing was the single-cylinder, 300 cc Honda EA engine used in the Honda N600 hatchback in January 1970.  This technology allowed Honda's cars to meet Japanese and United States emission standards in the 1970s without a catalytic converter.  A type of stratified charge engine, it first appeared on the 1975 "ED1" engine.  As emission laws advanced and required more stringent admissible levels, Honda abandoned the CVCC method and introduced PGM-FI, or Programmed Fuel Injection on all Honda vehicles.  Some vehicles in Japan had a combination of electronically controlled carburetors, called PGM-Carb on specific, transitional Honda D, E and ZC engines. The Lamborghini V12 refers to the flagship V12 engine used by Lamborghini.  Lamborghini have had two generations of V12 engines through their history, both of which were developed in-house.  The first-generation Lamborghini V12 was a sixty degree (60°) V12 petrol engine designed by Lamborghini, and was the first internal combustion engine ever produced by the firm. 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 timing.  Power ranges from 62 hp in the Logo to 130 PS in the Civic Si.  D-series production commenced 1984 and ended 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 D-400 series engine or the Iron Horse engine was a light-duty two-stroke engine used for powering lawnmowers produced in the 1960s to the early 1980s.  D-400 engines were single-cylinder engines designed and manufactured by the Outboard Marine Corporation (OMC; Johnson and Evinrude) for Lawn-Boy and Masport.  The D-400 engines displaced 109 cc, generated 2.61 kW of power, and operated in the range of 2400-3300 RPM.  The engines have a distinctive rectangular cowling that has created a nickname of Brick-top mowers.  Another distinctive feature is the two-finger vertical recoil starter.  The kidney-shaped muffler and exhaust unit is mounted beneath the mowers' deck and gives the engine a small, low profile design when compared to the newer and more powerful lawnmower engines.  The ignition system employs a magneto, points, and a condenser (capacitor) set-up with an unusual spark-advance system which utilised a weight on the crankshaft to adjust the spark-advance amount depending on engine speed.  The sprung governor was also unusual with a throw-yoke which operated under the flywheel and was linked to the throttle.  The carburettor was a float design and fed into a pair of reed valves. EcoDiesel is an engine used in the Ram 1500 since 2014, as well as in the Jeep Grand Cherokee.  Approximately 20% of 2015 RAM 1500s are equipped with the engine, mostly ones sold in Europe.  FCA uses the EcoDiesel name for two different engines.  One is the VM Motori A 630 DOHC 3.0L engine used in the Grand Cherokee, and Ram.  The other is a Fiat 3.0L diesel used in the Ram ProMaster.
Answer: Integra