Its power demand parallels with respect to its exertion.ĮGR redirects some exhaust gas back into the combustion chamber to join and blend with the fresh air-fuel mixture and combust with them. It also applies the EGR principle that the engine runs steadily and efficiently when operating at light to medium light efforts. It guides the exhaust gases into the cat and increases the contact area between the catalyst inside the cat and exhaust gas, which collectively results in a faster warm-up, cleaning efficiency that leads to cleaner exhaust emissions. The catalytic converter is connected at an oblique angle to the downpipe from the engine. This property hike up the temperature in the catalytic converter. Innovations such as the improvement in exhaust pipes made from stainless steel to reduce the weight and conserve the heat lost from the exhaust gas. Its emission technologies allow them to follow ULEV and EURO 4 standards. To add to the aforementioned features, L engines are also excellent in terms of emission compliance. L series’ timing chain mechanism is a blade-spring cam tensioner system. The rocker arm contacts the lobes in the camshaft on roller bearings. There is also an offset in the cylinder shaft and crankshaft which means that the cylinder has a slight disproportion above the crankshaft, giving better leverage on the crankshaft to help excerpt more power out of the combustion. L series’ pulverized Molydebnum coating, added to which is already provided, makes better lubrication between the piston and cylinder wall lining that greatly reduces the friction and power loss in this area.
L15b7 flutter valve series#
L series borrowed and applied some piston skirt advice from the 1995 – 2001 DC 2 Integra type R, specifically the B18C spec R engine, which was the first to use Molydebnum-coated piston skirts. This led Honda to integrate technologies that will lower internal friction, especially during operations, to alleviate power loss and translate that loss to a more usable power from the air-fuel mix combustion. The transversely mounted L-series engines have to be equal in, if not more superior, fuel economy and efficient fuel return to compete with the D series. So to maintain the narrow profile of the engine, Honda utilized the vertical space available, and it makes a better air circulation and cooling, more accessible engine bay for repairs and service. Still, it takes a lot of space due to its long-runner design that forces the intake manifold to curve up and over, causing the plenum to sit above the engine. It is lightweight and easy installation on the cylinder head. Its intake and exhaust system design is highly efficient, with its intake manifold made from hardened plastic – to guarantee structure lightness, designed to achieve high torque while treading in low to mid RPM range. This allows a narrower head to create a smaller, denser combustion chamber, a crucial environment attribute to expedite and enhance the combustion process of the air-fuel mixture. Honda combined the intake and exhaust rocker arms axles to attain a much smaller angle between the intake and exhaust valves, which reduced the stretch from 45 degrees to 30 degrees. L series engines have a much more compact SOHC cylinder head design. L series engines are smaller and thinner compared to the previous D series designs, especially when juxtaposed with the 1.5 Liter VTEC D-series the reason behind the slimmer profile is that thickness significantly affects the depth of the engine concerning its external dimensions. It catered smaller dimensions, reduced interior cabin space, and shorter engine compartments, which are the keys to fit a narrow engine bay than we see in most of Honda’s subcompact series of cars. Complementing Honda’s Global Small Platform, the L series targets the vital aspect of space efficiency by maximizing space. Honda’s L series engine is a petrol engine famous for its super compact design.
Valvetrain: SOHC 4 valves per cylinder (L15A) and DOHC 4 valves per cylinder (L15B).Cylinder Block Material: Aluminum Alloy.
L series are lighter, smaller, narrower, and have a better fuel economy while attaining lower emission levels. This L-series feature ideas that eclipsed its previous but well-established D-series engine, eventually replacing them down the road. It has four versions: SOHC i-DSi 1.2 L, 1.3L, 1.5 L, and a 1.5 L SOHC VTEC. Honda’s L-series family is the small, compact inline-4 engine that debuted in Honda Fit in 2001.
However, L15 engines took all of that right in the face and proved that they are worthy of praise, and their different and diverse versions say a lot about what L15 engines can offer. L15 engines are sometimes ridiculed, to some, due to L15’s old technology design. It appears in many models of Honda cars and created an avenue for compact and subcompact engine cars. Honda L15 engines are a variant of the vast L-series of engines.
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