第869章 留给华腾工业集团的时间不多了(2 / 2)

起航1992 千年静守 1619 字 2022-10-04

这还只是轩逸轿车,而“风雅·天籁”对于华腾工业集团则具有更层面的意义,想到“风雅·天籁”原本准备上市的时间就是明年年初,可如果在这个时候“风雅·天籁”被京城方面一口叫停、不许在京城出售,那乐子可就大了……

再算算时间,张起航深吸了一口气,脑子里不由得浮现出了在足坛那句非常有名的话:留给华腾工业集团的机会不多了!

时间真的不多了吗?

那也未必!

对于其他厂家来说可能是时间不多了,但对于曾经是李斯特公司合伙人的、对于发动机电喷系统的整体结构设计、控制技术以及系统标定逻辑早就已经烂熟于心张起航来说,别说只是做电喷发动机的标定和适配,就算是从无到头的开发一套电喷系统,也没有任何的难度,在这一块,他张起航就是国内真正NO.1的顶级专家!

但问题是,在这个过程当中不引起大家的怀疑,而不引起怀疑的前提,就是自己必须搞清楚国内在发动机电喷技术方面的整体水平……

………………

拎着糕点和水果的张起航,见徐青武教授带着一群师兄弟们正热烈的讨论着什么,笑着问道:“老师,各位师兄弟,你们在忙什么呢?”

看到张起航,徐青武教授同样很高兴,笑着说道:“小张你这个大忙人,今天怎么有时间来我们这?”

“我过来看看大家……”张起航一边说着一边随意扫了一眼电脑上的数据和图表,惊讶的道:“咦?老师你们在研究电喷?”

看到显示器上的数据和图表,张起航心中暗喜:刚刚还在琢磨着怎么开这个口呢,没想到机会这就来了。

张起航只是心中暗喜,可徐青武教授就是震惊了,他看看显示器,又转过个头来看这张起航,难以置信的道:“你能看懂这些数据?”

“这有什么看不懂的?”张起航随口说道:“老师你忘了?我之前跟你说过,咱们收购马自达929技术的时候,我曾经在他们哪儿呆了挺长一段时间……”

徐青武教授越发震惊了:“你是跟我说过这些没错,可就那么短短的一段时间,你就会电喷发动机的标定了?嗯……马自达汽车是不是脑抽了,连这种核心技术都给你看?”

“发动机的电喷标定而已,算什么核心技术?”张起航不以为然的撇撇嘴:“马自达真正的核心技术是发动机研发和底盘开发,发动机标定只是最浅层的技术,估计马自达方面都么当一回事,都是一看就懂、举一反三的东西……老师你这什么表情?”

“一看就懂?举一反三?”

徐青武教授脸上的表情很奇怪,似哭非哭、似笑非笑:“我问你,当节气门全闭、有启动信号、转速和发动机温度低于一定值,系统处于冷起动工况时,电喷系统的相应处理原则是什么?”

张起航不假思索的说道:“基本控制原则是:喷油量随着起动后转速的提高而减少,点火提前角随着温度的升高而提高;冷起动后,转速介于起动转速和怠速转速之间,冷却液温度低于正常温度,系统处于起动后暖机工况。

整体的处理原则是:喷油量借助与转速、负荷相关的暖机系数,依据发动机温度进行加浓,点火提前角参照温度前移。

随着节气门开度的变化,系统根据既定逻辑判断发动机负荷的变化,当车辆处于加速工况时,喷油量以输出最大扭矩为目的进行加速加浓的处理,减速时喷油量进行减速减油的处理,点火提前角在负荷交变时为避免爆震而相应变化;正常行驶时,系统根据理论空燃比和氧传感器的反馈设定经济低污染下的喷油量,点火提前角根据冷却液温度做出相应的变动;

当节气门关闭,发动机转速接近怠速转速设定值时,系统判断处于怠速工况,此时不仅要进行怠速加浓,还要进行怠速旁通阀门的调节,驱动电机达到相应的开度,点火提前角根据燃油效率和排放要求予以优化……”

说到这,张起航看向徐青武:“老师,您觉得这个整体逻辑有没有问题?”

“没有问题!,没有问题!”原本只是想着试探一下自己学生的徐青武教授,听到张起航这番话,高兴的一张脸都红了,他激动的拍着张起航的肩膀,一张脸上全都是开心:“好家伙!真没想到你还有这么一手……对了,你小子向来都是无事不登三宝殿,说吧,到底是怎么情况?”

说到后面,徐青武教授的表情已然严肃起来。

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