| 词条 | GM L3B engine |
| 释义 |
| name = GM L3B engine | image = | manufacturer = General Motors | aka = | production = 2018- | predecessor = | successor = | configuration = I4 | displacement = {{convert|2727|cc|L|1|order=flip|abbr=on}} | bore = {{convert|92.25|mm|in|abbr=on|2}} | stroke = {{convert|102.00|mm|in|abbr=on|2}} | block = 380 T5 Cast Aluminum | head = 356 T5 Cast Aluminum | valvetrain = DOHC 4 valves/cyl | compression = 10.0:1 | turbocharger = Single BorgWarner | fuelsystem = Gasoline direct injection | management = | fueltype = Gasoline | oilsystem = Wet sump | coolingsystem = Water cooled | idle = | redline = 6100 rpm | power = {{convert|310|hp|kW|abbr=on|0}} | specpower = | torque = {{convert|348|lbft|Nm|abbr=on|0}} | length = | width = | height = | weight = | emissions level = | emissions control = }} The GM L3B engine is an all-new engine introduced in the 2019 Chevrolet Silverado. Production takes place at GM's Spring Hill Manufacturing.[1] In addition to GM's active fuel management, start-stop system and variable valve timing; which are already featured on GM's other full-size pickup truck engines. This engine also features GM's Intake Valve Lift Control which has 3 different intake cam profiles that are electromagnetically-actuated to provide the best fuel economy and performance at a wider range of operating conditions. The engine is the first GM truck engine to feature an active thermal management system: consisting of an electrically-driven water pump and a 3-way rotary valve, which allows the engine to maintain proper operating temperatures and quicker warm-ups. As well as a continuously variable oil pump help to lower parasitic losses as well as providing proper lubrication as well as cooling to the engine, especially under high-load conditions. TurboThe BorgWarner developed turbo can produce up to 22 psi/1.5 bar of boost thanks in part to its unique dual volute and variable geometry design. Instead of two side-by-side exhaust passages like on a regular twin-scroll turbocharger, in this design the two exhaust passages are concentric and allow for better use of the exhaust pulse energy. References1. ^{{cite web|last1=Sherman|first1=Don|title=All-new four-cylinder for 2019 Chevrolet Silverado|url=https://www.sae.org/news/2018/05/gm-2.7-l-i-4-revealed|website=www.sae.org|publisher=SAE.org|accessdate=28 May 2018|language=en}} 1 : General Motors engines |
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