Honda L engine


The L-series is a compact inline-four engine created by Honda, introduced in 2001 with the Honda Fit. It has, and 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 are also sold in the Japanese-only Airwave wagon and Mobilio MPV.
Two different valvetrains are present on this engine series. The L12A, L13A and L15A use , or “intelligent Dual & Sequential Ignition”. i-DSI utilizes two spark plugs per cylinder which fire at different intervals during the combustion process to achieve a more complete burn of the gasoline. This process allows the engine to have more power while keeping fuel consumption low, thanks to the better gasoline utilization. Emissions are also reduced. The i-DSI engines have two to five valves per cylinder and a modest redline of only 6,000 rpm, but reach maximum torque at mid-range rpm, allowing for better performance without having to rev the engine at high speeds. The i-DSI is also known for not using Turbochargers in the performance category, as it uses a high compression, long stroke with a lightweight and compact engine.
The other valvetrain in use is the VTEC on one of the two varieties of the L15A. This engine is aimed more at performance than efficiency with a slightly higher redline with 4 valves per cylinder, which reaches peak torque at higher rpm. However, it still offers a good combination of both performance and fuel efficiency. Both the i-DSI and VTEC have relatively high compression ratios at 10.8:1 and 10.4:1, respectively.
Before April 2006, the L-series were exclusively available with a 5-speed manual transmission and continuously variable transmission. With the introduction of the Fit in Canada and the United States, an L-series engine was mated to a traditional automatic transmission with a torque converter for the first time. The L12A i-DSI is available exclusively in the European domestic market Jazz and is sold with only a 5-speed manual transmission.
As of 2010, the L15A7 is a class legal engine choice for SCCA sanctioned Formula F competition, joining the 1.6L Ford Kent engine.
In 2016 Honda introduced the L15B engine as part of their continuing global earth dreams strategy for lower emissions and higher fuel economy for a range of their cars, available with 6-speed manual and CVT transmissions with Earth Dreams Technology.

L12

L12A i-DSI

L13A i-DSI

L15A (i-VTEC / CNG)

This engine has been used since 2012 in Honda City CNG
It debuted in Honda City/Fit Aria four door Sport-sedan in November 2002.
It debuted in JDM Fit and Mobilio Spike in September 2002.
This engine has been used since 2009 in 2nd Gen Honda Jazz
Found in 2015-2019 3rd generation Honda Fit in North American Market
Similar to the L15B7, but the intake is different.
Version used in Thailand and South Africa with E85 ethanol fuel capable, Similar to the L15B7
Found in:
Honda Civic Japan
It debuted in Honda Mobilio Second Gen 2013, Honda City and Honda BR-V
It debuted in Honda Jazz 2014
It debuted in Honda HR-V 2nd Gen 2014

LDA-MF3 (i-DSI + i-VTEC)

Similar to the LFA1, but with unknown changes.