Direct Injection Lambda 3.8-Liter Engine

DIRECT INJECTION LAMBDA 3.8-LITER ENGINE

In keeping with its 5.0-liter V8 sibling, the Genesis 3.8-liter Lambda engine will receive direct injection (GDI) technology, boosting its output 15 percent from 290 to 333 horsepower, an impressive gain of 43 horsepower with no increase in displacement. In addition, peak torque rises from 264 lb.-ft. to 291 lb.-ft., a generous increase of 27 lb.-ft. from the same 3.8 liters. Compression ratio increases from 10.4:1 to 11.5:1 for greater thermal efficiency. This new direct-injected Lambda V6 produces a higher specific output (87.6 hp/liter) than its normally-aspirated premium luxury competitors.

 

Genesis 3.8-liter GDI Competitive Set

GENESIS

3.8-liter GDI V6

Lexus GS350

3.5-liter V6

BMW 528i

3.0-liter V6

M-B E350

3.5-liter V6

Normally-aspirated V6 Specific Output (hp/liter)

87.6

86.6

80.0

76.6

 

The 3.8-liter engine retains all of the premium technologies that have made it outstanding since the launch of Genesis: Dual Continuously Variable Valve Timing (D-CVVT), variable induction, all aluminum block and heads, steel timing chain, and iridium-tipped spark plugs. Besides the generous horsepower and torque gains, direct injection technology produces a significant reduction in emissions through a 40 percent reduction in catalyst light-off time. Further, a variable vane oil pump has been fitted to precisely match oil pressure with engine lubrication requirements for increased efficiency at all engine speeds. As a result, 3.8-liter GDI fuel economy increases over seven percent from 27 mpg to 29 mpg on the highway.

 

2011 Genesis 3.8-liter Engine vs. 2012 Genesis 3.8-liter Direct Injection with eight-speed automatic

 

Engine

Horsepower

Torque
(lb-ft)

Fuel Economy (mpg)

City

Highway

Lambda 3.8-liter V6 Direct Injection with eight-speed automatic transmission

290 ? 333

264 ? 291

18 ? 19

27 ? 29

 

All 3.8-liter engines will be coupled to an in-house-developed eight-speed transmission with SHIFTRONIC and precisely calibrated gear ratios for an overall transmission efficiency gain of six percent. These two additional ratios serve to achieve competing objectives of acceleration and economy without compromise.