Future petrol, diesel and electrified VWs will use a wide range of new, emissions-cutting tech, including fuel made from straw. Here’s how
8 February 2018

In the wake of Dieselgate, Volkswagen is planning what it calls a “wide bandwidth” of new powertrain technologies to meet future CO2 requirements being driven by Europe, North America and China.

The company says achieving climate targets has become a “primary objective” and massive resources are being allocated in a money-no-object assault on emissions. Developments include a wide range of hybrid, electric and advanced combustion-engine technologies. he 95g/km CO2 fleet average set for 2020 is likely to fall well below that by 2030. To meet that challenge, electrification of powertrains will be essential for all manufacturers.

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Volkswagen is forecasting that 25% of its cars will be battery-electric by 2025, with more than 50% being electrified in some way, compared with just 3% today. Research is also continuing into bio and synthetic fuels as well as synthetic natural gas.

Fast plug-in hybrids and electric cars:

VW already has the electric e-Golf and e-Up, as well as Golf and Passat GTE plug-in hybrids, and it is developing the range further. Current hybrids are fitted with a seven-speed DSG transmission with built-in 60bhp electric motor/ generator. Engineers are also working on a ‘GTI’ prototype, called the Golf GTE Performance, where software changes boost acceleration in electric-only mode up to an unlimited speed if the battery is sufficiently charged. An all-new seven-speed DSG transmission, waiting to enter production, can also support full-hybrid drives.

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Improved tech cleans up diesel:

The recall on VW diesel cars following Dieselgate is 70% complete in Europe as a whole, with fixes on 2.0-litre, 1.6-litre and 1.2-litre engines being carried out at the rate of one car every 1.4sec globally. VW says independent testing confirms the recalled cars meet the legislative requirements using the new Real Driving Emissions measurements, although it is facing repeated calls that the fix is damaging and making cars more polluting in certain cases.

Future options for significantly reducing NOx include the introduction of a second selective catalyst reduction module into the exhaust system along with a NOx storage catalyst. The amount of NOx generated inside the engines will be reduced too, using new higher-pressure injection systems and combustion strategies. Electrically powered compressors operating on the new 48V electrical systems can also reduce NOx ‘peaks’, lessening the work left to do by the catalysts.

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Petrol technology gets a boost:

The new 128bhp 1.5-litre TSI evo petrol engine is a rework of the existing engine employing advanced and expensive technology to improve fuel economy and emissions.

The engine is the first volume-production petrol engine to be equipped with a variable turbine geometry turbocharger, has the highest compression ratio of a turbocharged petrol engine at 12:1 and runs on a special Miller cycle operating regime. The combination of the three adds up to claimed best-in-class fuel consumption and flexible power delivery throughout the rev range.

The engine is about to go on sale in the UK in the Golf but a more powerful, 158bhp version exists in prototype form (and could be added to the Mk8 Golf, pictured as an Autocar rendering below). Future petrol technologies being considered include water injection and variable compression ratios. 

2019 Volkswagen Golf first official picture revealed

CNG and e-fuels:

Compressed natural gas (CNG) has been popular in Europe for decades and is now joined by renewable bio-methane made from fermenting plant materials such as straw. Bio-fuels are carbon neutral because the plants absorb CO2 when growing. Some 1800kg of straw - about seven circular bales - can make 300kg of CNG, enough to power a Polo for 6200 miles. The VW Group has been working on the production of synthetic e-fuels for some years. The process combines CO2 from the atmosphere or from fermentation processes with sustainably produced hydrogen to make a carbon-neutral synthetic liquid e-fuel. It’s worth the effort, say engineers, because switching to carbon-neutral synthetic or bio-fuels can have an immediate effect when used in older as well as new engines. 

Two types of mild hybrid:

Mild-hybrid electric vehicles (MHEVs) should become the norm in the next few years as 48V electrical systems become commonplace. The combination of 48V belt-integrated starter-generator (BISG) and a small, affordable 48V lithium ion battery means they can recover and store electrical energy like other hybrids. The BISG can also boost engine torque, saving fuel and improving response.

VW has two prototypes, a Golf 1.5 TSI MHEV and an MHEV Plus. Both have 15bhp BISGs but the Plus has a second, 34bhp electric motor driving the front axle, although it can also be fitted to the rear axle to create a low-powered all-wheel-drive system to aid traction. The Plus has the advantage that it can recover energy while coasting with the engine stopped and can also pull away under electric-only power like a full-hybrid.

Both prototypes are fitted with a new generation seven-speed DSG transmission, which cuts CO2 by 10g/km compared with VW’s first DSG launched in 2003.

Read more:

VW e-Golf review 

VW Polo review 

Volkswagen engineer sentenced to prison for Dieselgate involvement

Our Verdict

Volkswagen Golf

New 1.5-litre petrol engine promises to help keep the refreshed Volkswagen Golf ahead of rivals

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Comments
23

8 February 2018

Why has this article appeared? Is it a press release from VAG to smooth over the first emissions scandal cheat devices, the Netflix documentary dirty money, the monkey tests and the current 3.0tdi Euro6 cheating software engines? 

 

8 February 2018

Complete with the fudged cliche "dieselgate" as well. It is "VWgate" .

8 February 2018
Flatus senex wrote:

Complete with the fudged cliche "dieselgate" as well. It is "VWgate" .

How right you are. The emissions debacle was just another in the series of shortcuts VW foisted onto their customers in their obsession to become number one. In the same vein as DSG, twin-charger engine, maybe even the leaky Eos, the company just didn't have the patience to develop solutions properly: The respect for their paying customers meant nothing compared to getting cars onto the market, those sales figures and advantage over everyone else. Volkswagen themselves admitted to this obsession after they were forced to own up for their emissions rigging and said things would change. But that false sentiment was quickly forgotten, we're now repeatedly hearing how they plan to be the biggest and best in the fields of electrification and automation...

A34

8 February 2018
Jimbbobw1977 wrote:

Why has this article appeared? Is it a press release from VAG to smooth over the first emissions scandal cheat devices, the Netflix documentary dirty money, the monkey tests and the current 3.0tdi Euro6 cheating software engines? 

 

Yes - its PR in action

8 February 2018
Jimbbobw1977 wrote:

Why has this article appeared? Is it a press release from VAG to smooth over the first emissions scandal cheat devices, the Netflix documentary dirty money, the monkey tests and the current 3.0tdi Euro6 cheating software engines? 

 

 

What did you think was supposed to happen to a "Press release" ?

8 February 2018
Toyota became world's number one and overtook US car companies. False claims made on safety issues (later found to be driver errors by NASA but that was 18 months after the damage had been done)
VW on course to overtake US car companies... Boom. They discover emissions cheating. I'll bet in 2 years you'll find all US car companies had cheat tests too. Of course America's largest selling vehicle is the F150 pickup so is exempt from car emissions standards.....
I'll put my tin foil hat back one now.

 

 

 

8 February 2018
Deputy wrote:

Toyota became world's number one and overtook US car companies. False claims made on safety issues (later found to be driver errors by NASA but that was 18 months after the damage had been done) VW on course to overtake US car companies... Boom. They discover emissions cheating. I'll bet in 2 years you'll find all US car companies had cheat tests too. Of course America's largest selling vehicle is the F150 pickup so is exempt from car emissions standards..... I'll put my tin foil hat back one now.

 

The first ones to be caught were Ford and then GM mate. Paid 7 mil and 13 mil respectively. Your Theory is good to hear and the US are more than capable of doing it but theres nothing to be taken away from VAG group. Other independant groups have done the tests aswell. One of them reports they had to do it in Switzerland as the German athourities refused to grant permissions. 

For all my love to own a Porsche , I have decided that I will never own a VAG car. Not as if they were the only ones , just they became too big and did so by crossing the line way too much. I have the same feeling towards Tesco so its just me. my opinion. 

If you don't look back at your car after you parked it, you own the wrong car.

8 February 2018

Am I the first?

typos1 - Just can’t respect opinion

8 February 2018

Damn right the emissions software update fix is causing problems.  VW had to admit to Transport Committee that it had received nearly 17,000 complaints abotu it up to December 2017, and has stopped short of saying there is "no problem" with the fix and can only committ to saying there is "no systemic issue" which is pretty much a tacit admission that there are problems occuring> particualrly when VW is quietly replacing thousands of EGR components, injectors and things related to the emissions system for free when they go wrong - but only on cars that have had the "fix".  Its flawed, its damaging and owners know it.  Shame VW cant just admit to it as being a fudge.  Afterall it's admitted to emissions rigging and gassing monkeys so far.  Whats another quick confession in the midst of a bit of post-monkeygate PR spin?

8 February 2018

'The company says achieving climate targets has become a “primary objective” and massive resources are being allocated in a money-no-object assault on emissions'

Tacitly admitting it previously wasnt a primary objective and money was put ahead of emissions before..

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