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Old 12-18-2008, 12:26 PM   #1
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Default GM announces new direct-injection engine range


The new four-cylinder and V6 engines with direct-injection will first appear in the 2010 Chevrolet Equinox



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General Motors has implemented new direct injection technology into the four-cylinder and six-cylinder engines found in the Chevrolet Equinox range, helping the General's 2010 model overtake Ford's Escape crossover in terms of mileage and power.

The new Equinox engine range will consist of a 2.4L four-cylinder and a 3.0L V6. The 2.4L engine delivers an estimated 30mpg in highway driving, placing the Equinox at the top of its segment in highway mileage and GM estimates that consumers who drive the 2.4L-equipped Equinox 15,000 miles per year will save 134 gallons of fuel or about $270 to $400 annually (assuming gas prices of $2 or $3 per gallon as compared to the 2009 model year Equinox).

The new 2.4L direct injection engine delivers an estimated 180hp (134 kW) at 6,700rpm and 172lb-ft of torque (232Nm) at 4,900 rpm. It uses technology based on GM's other four-cylinder direct injection applications, but GM claims that it has unique features designed for its specific application in the Equinox. This includes an 11.4:1 compression ratio that helps build power, slightly dished pistons that increase combustion efficiency and injectors with an application-specific flow rate.

The 3.0L unit with direct injection is rated at an estimated 255hp (187kW) and 214lb-ft of torque (290Nm), more power and torque than Ford's six-cylinder engine found in the Escape.

The Equinox will join a growing roster of direct injected vehicles from GM, including the all-new 2010 Cadillac SRX crossover and 2010 Buick LaCrosse sedan, which, along with the Equinox, debut in January at the Detroit Motor Show.
http://www.motorauthority.com/gm-ann...ine-range.html
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Old 12-18-2008, 12:30 PM   #2
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not bad... not bad.
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Old 12-18-2008, 12:38 PM   #3
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That 4cyl. has nice mileage for an SUV, but will GM still be in business to use the engine?
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Old 12-18-2008, 02:00 PM   #4
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Old 12-18-2008, 04:03 PM   #5
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I see better cat efficiency by halving the exhaust ports, but the adding rockers and pushrods to a twin cam motor still worry me as far as cost, adjustments, and overall complexity go..
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Old 12-18-2008, 06:17 PM   #6
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Currently, the Equinox comes with av3.4L V6 engine, that makes 185 hp at 5200 rpm and 210 lb.-ft. of torque at 3800 rpm, and gets 17/24 EPA.

So this new engine is a whole Liter smaller, yet puts out similar power numbers (the less torque might be offset if the new engine is lighter), and gets 25% better highway mileage. That's a fantastic improvement.

It really is too bad that it takes an American company to nearly go bankrupt for them to come out with some very impressive products.
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Old 12-18-2008, 06:25 PM   #7
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Originally Posted by Hazdaz View Post
It really is too bad that it takes an American company to nearly go bankrupt for them to come out with some very impressive products.
Things change only when the HAVE to.
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Old 12-18-2008, 06:28 PM   #8
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Be interesting what the 2L diesel Tiguan gets - might be a tad smaller than the Equinox but the milege difference vs cost comparison will be interesting.

If GM had spent their time and research on clean diesel I bet that milege would be in the 35mpg range and the torque would be up dispite the smaller displacement.

A case where GM is playing the numbers game on development costs and max profit vs shooting for the best milege and performance. That and I suspect that the whole diesel is smelly - loud and slow perception in the US was the final blow to why they spent all this time and money on DI gas engine line up.
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Old 12-18-2008, 06:31 PM   #9
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Things change only when the HAVE to.
Tell that to Honda and their 67 MPG Fit Hybrid.... they don't "need" to come out with a hybrid version of an already very economical car... yet they do because they can, and that is why they succeed. Even with the current economic mess, even with their sales falling dramatically (like everyone elses), they are still making a yearly profit.
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Old 12-18-2008, 06:35 PM   #10
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Originally Posted by Hazdaz View Post
Tell that to Honda and their 67 MPG Fit Hybrid.... they don't "need" to come out with a hybrid version of an already very economical car... yet they do because they can, and that is why they succeed. Even with the current economic mess, even with their sales falling dramatically (like everyone elses), they are still making a yearly profit.
i think the dude was referring to american car companies.
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Old 12-18-2008, 06:38 PM   #11
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Be interesting what the 2L diesel Tiguan gets - might be a tad smaller than the Equinox but the milege difference vs cost comparison will be interesting.
Even forgetting about the extra up-front costs associated with diesels, that 2L VW engine, would need to be in the 45 MPG neighborhood to be able to compete with a gas engine that gets 30 MPG simply because the price of the fuel is so much more right now.
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Old 12-18-2008, 06:40 PM   #12
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i think the dude was referring to american car companies.
I know, and I was referring to a foreign company that doesn't need to see bankruptcy to make a good product.
Corporate America = do as little work as possible to just get by.
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Old 12-18-2008, 07:23 PM   #13
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Originally Posted by Hazdaz View Post
Even forgetting about the extra up-front costs associated with diesels, that 2L VW engine, would need to be in the 45 MPG neighborhood to be able to compete with a gas engine that gets 30 MPG simply because the price of the fuel is so much more right now.
I really think that with the pressure coming from the top ie the GOV for more fuel efficient cars the GOV is going to take steps to make the wide range of diesel taxes flatter in the next few years. The high diesel prices on a local basis has more to do with local gov taxing diesel based on the idea of discouraging polluting cars. Given the clean diesels are more efficient than the gas cars and now with the bluetec stuff and just the clean tech stuff that argument gets shot down pretty fast.

Every American wants cheap fuel and great milege a high tax on diesel isn't going to keep clean diesel passenger cars from being a major choice in the next few years. The fuel taxes are going to change shoot several states have been working on ways to tax per mile not on the fuel you use. As cars become more efficient local gov's will be forced to change the fuel tax structure and I bet you it will be based on miles vs gallons. Which case the higher diesel prices right now are a symptom of politics not keeping up with the times or in this case the technology all of us will be driving diesel or not.

I'm all for any technology that boosts milege though I see DI gas engines as sort of the cheap easy way of making a decent step forward in milege when it comes to the domestic auto makers. It keeps margins resonably high avoids the whole US diesel stigma issue that they would face with diesel engines.

But as the clean diesels catch on the Domestics better have some competitive technology that matches it or they will again find them selves at the short end of the milege stick.
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Old 12-19-2008, 01:28 PM   #14
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Default GM's Direct-Injected Engine Future




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With so much on the line and even more to prove to consumers, General Motors has previewed its latest in fuel-saving technologies for the upcoming 2009 and 2010 model years. As is the case with other manufacturers, GM has chosen to go the most cost effective direct injection (DI) route to up EPA estimated mpg fuel ratings, decrease emission outputs, and maintain sufficient power in its future vehicle lineups. The highlight of GM's DI surge will be a pair of engines -- a 2.4L four-cylinder and 3.0L V-6 -- set to debut at next month's Detroit auto show under the hood of the 2010 Chevrolet Equinox.


Before we delve into GM's expanding lineup of DI powertrains, it's probably best to break down the technology. Direct-injected motors receive their fuel delivery directly into each cylinder where it first evaporates, cooling the hot compressed air-fuel mixture, which makes it less susceptible to knock and therefore more tolerant of a higher compression ratio. In regular port fuel-injected engines, the injection and evaporation happens in the intake runner, well before the mixture enters the combustion chamber.



Generally speaking, the process yields less fuel consumption, equivalent power production and reduced emissions versus non-DI motors. It also allows for cleaner cold starts through an easier ignition.
In addition to boasting direct injection, both engines utilize variable valve timing on both the intake and exhaust cams to improve performance.



The 2.4L four-banger makes 182 hp at 6700 rpm and 174 lb-ft at 4400 rpm and features a high-compression 11.4:1 ratio for optimal power. Dished pistons allow increased combustion efficiency, while application-specific injectors automatically modulate fuel flow. It's based on the existing 2.4-liter, but the block is now sand-cast to improve strength and withstand the higher in-cylinder pressures (the previous engine used a lost-foam casting method). Its bigger 3.0L V-6 brother (255-hp, 214 lb-ft) is based off the current 3.6L direct-injected unit in the Cadillac CTS and incorporates an isolated fuel injector system for quieter operation. Rubber isolators are used with the fuel rail to diminish vibration and noise as well.


GM introduced its first-generation DI system on a small scale in the 2007 Saturn Sky Red Line and Pontiac Solstice GXP. For the 2009 model year, six engines in 18 global market models will have the technology, with that number jumping up to eight engines in 38 models by MY2010. North America alone will have 18 models featuring DI in the same product cycle. Along with the 2010 Chevrolet Equinox, the technology will be employed by the 2010 Cadillac SRX and 2010 Buick LaCrosse sedan, both of which are also bowing in Detroit.


To give you a better idea of how significant the potential fuel savings DI helps to achieve, consider these figures compiled by GM bean counters. The General's 2009 North American lineup will use 700 million fewer gallons of fuel during the lifetime of its vehicles compared with the 2008 group. That number is expected to hit 1.1 billion gallons for 2010. Enter into the equation a price of $2 to $3 dollars per gallon, and you get a good indication of the total pump savings.


Even with so much uncertainty and gloom surrounding Detroit and Washington these days, it's a welcome surprise for GM to continue its efforts to push next-generation fuel-saving technologies in its vehicles. Whether or not this is all too little too late for the struggling automaker has yet to be seen, but we're quite certain it won't hinder its cause.
Check back for our complete 2009 North American International Auto Show coverage straight from Detroit in the coming days.
http://www.motortrend.com/features/a...s_savings.html
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Old 12-20-2008, 11:11 AM   #15
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Problems with this press release:

People don't buy the Equinox b/c its a poor handling, loud (NVH), horrible interiored Daewoo sourced piece of junk. Its power and MPG have never entered into its historically low customer satisfaction ratings. Now GM wants to put a "world class" motor into a low class vehicle and hope all will right itself? Come on.

I predict much like the Cobalt and Aveo this engine will get nowhere near 30 MPG on the HWY and will likely struggle to average the current fuel economy numbers of the RAV4, CR-V, and Forester. The Escape is far from the small SUV/crossover benchmark.
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Old 12-20-2008, 11:32 AM   #16
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This should be pretty cool. Cant wait to see GM step it up to where they should be.

Nick
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Old 12-20-2008, 12:18 PM   #17
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Originally Posted by BOY View Post
Problems with this press release:

People don't buy the Equinox b/c its a poor handling, loud (NVH), horrible interiored Daewoo sourced piece of junk. Its power and MPG have never entered into its historically low customer satisfaction ratings. Now GM wants to put a "world class" motor into a low class vehicle and hope all will right itself? Come on.

I predict much like the Cobalt and Aveo this engine will get nowhere near 30 MPG on the HWY and will likely struggle to average the current fuel economy numbers of the RAV4, CR-V, and Forester. The Escape is far from the small SUV/crossover benchmark.
It's going to be a new Equinox.
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Old 12-20-2008, 05:15 PM   #18
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It's going to be a new Equinox.
mmhhmm will it now
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Old 12-21-2008, 10:45 AM   #19
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http://www.leftlanenews.com/chevrole...ox-future.html

2010 equinox.

I'm not backing it, as I generally hate crossovers, but it's not the old one.
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