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主页 新闻 所有资讯 BMW: For More M Power – Just Inject Water BMW: For More M Power – Just Inject Water 所有资讯 Hans | August 05日, 2015 02:53 PM Yes you’ve read that right. BMW believes that the solution to increase power output from a turbocharged petrol engine is to inject water, and we’re not talking about the radiator or intercooler here, but literally injecting water directly into the combustion chamber.Earlier this year, BMW debuted a novel water injection technology in the M4 MotoGP Safety Car. Since then, the technology have progressed further, evolving into direct water injection and have been adapted for use in a prototype 1-series (pre-LCI model) fitted with a modified 1.5-litre three cylinder engine.BMW says its direct water injection technology overcomes the main hurdle with turbocharged engines – that power output is affected by high temperature of the compressed air that is being fed into the engine, thus limiting the compression ratio, which subsequently limits the engine’s power output.The temperature in the combustion chamber is also directly proportionate with harmful NOx emissions. So cooling the compressed air that’s coming into the engine’s intake manifold not only increases performance, but also reduces NOx emissions.In the M4 MotoGP Safety Car, located in the boot is a five-litre water tank. With the aid of a high pressure pump and sophisticated control electronics, water is then injected into the engine’s intakes at 10 bars of pressure.The water is injected as a fine spray into the intake manifold plenum chamber where it evaporates, extracting energy from its surroundings and reducing combustion temperatures in the engine by around 25 degrees Celsius. In the case of the 1-series prototype, the system has been improved further to inject water not just into the intake manifold, but also directly into the combustion chamber.In most turbocharged engines, the engine’s computer usually injects a tiny amount of fuel to cool combustion chamber before delivering more fuel for combustion. With direct water injection, this process is no longer necessary and BMW reckons that the system can reduce real-world fuel consumption by 8 percent.With better control of the combustion chamber’s temperature, the prototype 1-series’ three cylinder turbocharged engine’s compression ratio can now be increased from 9.5:1 to 11.0:1, which BMW says will improve power and torque by up to 10 percent.With lower combustion temperatures comes reduced risk of ‘knocking,’ so the engine can now reliably run on lower octane RON95 fuel despite the high 11.0:1 compression ratio.How often must the water tank in the boot be refilled? In the case of the M4 MotoGP Safety Car’s twin turbo straight-six 431 PS engine driven under racing conditions, the tank needs to refilled at every fuel stop.However BMW says the system that will be fitted into production BMWs in the future will require almost zero maintenance as the tank refills itself by recovering waste condensed water vapour from the vehicle’s air-conditioning system. ✕ 使用 WhatsApp 联系 我们依据 PDPA 保护您的个人信息。 我同意 Carlist.my 的使用条款和隐私政策 我同意接收来自 Carlist.my 及其汽车销售商、业务附属机构和合作伙伴的个性化通信。 查看最佳汽车优惠! Prev Next 特价 - 马上拨电! 天 小时 平均市场价格 为什么没有价格? 有时经销商希望您以最优惠的价格联系。 I 为什么没有价格? 有时经销商希望您以最优惠的价格联系。 相关标签 BMW BMW M4 M4 打印 相关文章 GALLERY: BMW Concept M4 GTS Is In Malaysia For A Special Preview 所有资讯 Chris Aaron | March 16日, 2016 Not even visitors of the recent Frankfurt Motor Show got to see it, but here is the BMW Concept M4 GTS making a special appearance in Malaysia, after ... BMW Preps M4 DTM For Zanardi, Hand Operated Clutch, Brake, and Throttle 所有资讯 Aswan | August 13日, 2018 With Alessandro Zanardi preparing for a guest appearance at the upcoming round of the DTM championship in Misano, BMW has also made modifications to ... The BMW M4 and Vossen Wheels Go Together Like Satay and Sambal Live Life Drive Aswan | March 20日, 2017 When it comes to the aftermarket for continental cars, there are a huge range of options available in a multitude of sizes and designs. Track rats ... A Closer Look At BMW's 2019 M4 DTM Engine – 2.0-Litre Four-Cylinder, 600 Bhp 所有资讯 Arvind | April 30日, 2019 Despite the 50 years that lie between them, these two BMW race engines – the M121 (from the 2002 Ti race car) and P48 (that powers the 2019 M4 DTM) – ... 留言
BMW: For More M Power – Just Inject Water 所有资讯 Hans | August 05日, 2015 02:53 PM Yes you’ve read that right. BMW believes that the solution to increase power output from a turbocharged petrol engine is to inject water, and we’re not talking about the radiator or intercooler here, but literally injecting water directly into the combustion chamber.Earlier this year, BMW debuted a novel water injection technology in the M4 MotoGP Safety Car. Since then, the technology have progressed further, evolving into direct water injection and have been adapted for use in a prototype 1-series (pre-LCI model) fitted with a modified 1.5-litre three cylinder engine.BMW says its direct water injection technology overcomes the main hurdle with turbocharged engines – that power output is affected by high temperature of the compressed air that is being fed into the engine, thus limiting the compression ratio, which subsequently limits the engine’s power output.The temperature in the combustion chamber is also directly proportionate with harmful NOx emissions. So cooling the compressed air that’s coming into the engine’s intake manifold not only increases performance, but also reduces NOx emissions.In the M4 MotoGP Safety Car, located in the boot is a five-litre water tank. With the aid of a high pressure pump and sophisticated control electronics, water is then injected into the engine’s intakes at 10 bars of pressure.The water is injected as a fine spray into the intake manifold plenum chamber where it evaporates, extracting energy from its surroundings and reducing combustion temperatures in the engine by around 25 degrees Celsius. In the case of the 1-series prototype, the system has been improved further to inject water not just into the intake manifold, but also directly into the combustion chamber.In most turbocharged engines, the engine’s computer usually injects a tiny amount of fuel to cool combustion chamber before delivering more fuel for combustion. With direct water injection, this process is no longer necessary and BMW reckons that the system can reduce real-world fuel consumption by 8 percent.With better control of the combustion chamber’s temperature, the prototype 1-series’ three cylinder turbocharged engine’s compression ratio can now be increased from 9.5:1 to 11.0:1, which BMW says will improve power and torque by up to 10 percent.With lower combustion temperatures comes reduced risk of ‘knocking,’ so the engine can now reliably run on lower octane RON95 fuel despite the high 11.0:1 compression ratio.How often must the water tank in the boot be refilled? In the case of the M4 MotoGP Safety Car’s twin turbo straight-six 431 PS engine driven under racing conditions, the tank needs to refilled at every fuel stop.However BMW says the system that will be fitted into production BMWs in the future will require almost zero maintenance as the tank refills itself by recovering waste condensed water vapour from the vehicle’s air-conditioning system. ✕ 使用 WhatsApp 联系 我们依据 PDPA 保护您的个人信息。 我同意 Carlist.my 的使用条款和隐私政策 我同意接收来自 Carlist.my 及其汽车销售商、业务附属机构和合作伙伴的个性化通信。 查看最佳汽车优惠! Prev Next 特价 - 马上拨电! 天 小时 平均市场价格 为什么没有价格? 有时经销商希望您以最优惠的价格联系。 I 为什么没有价格? 有时经销商希望您以最优惠的价格联系。 相关标签 BMW BMW M4 M4
GALLERY: BMW Concept M4 GTS Is In Malaysia For A Special Preview 所有资讯 Chris Aaron | March 16日, 2016 Not even visitors of the recent Frankfurt Motor Show got to see it, but here is the BMW Concept M4 GTS making a special appearance in Malaysia, after ...
BMW Preps M4 DTM For Zanardi, Hand Operated Clutch, Brake, and Throttle 所有资讯 Aswan | August 13日, 2018 With Alessandro Zanardi preparing for a guest appearance at the upcoming round of the DTM championship in Misano, BMW has also made modifications to ...
The BMW M4 and Vossen Wheels Go Together Like Satay and Sambal Live Life Drive Aswan | March 20日, 2017 When it comes to the aftermarket for continental cars, there are a huge range of options available in a multitude of sizes and designs. Track rats ...
A Closer Look At BMW's 2019 M4 DTM Engine – 2.0-Litre Four-Cylinder, 600 Bhp 所有资讯 Arvind | April 30日, 2019 Despite the 50 years that lie between them, these two BMW race engines – the M121 (from the 2002 Ti race car) and P48 (that powers the 2019 M4 DTM) – ...