Η Opel σε μια αναμενόμενη κίνηση ανακοίνωσε τη παρουσίαση ενός νέου 3-κύλινδρου κινητήρα βενζίνης με χωρητικότητα 1 λίτρου, οποίος θα παρουσιαστεί επίσημα το Σεπτέμβρη στην έκθεση της Φρανκφούρτης.
Τον ονομάζει 1.0-liter SIDI Turbo και διαθέτει μπλοκ από χυτό αλουμίνιο, άμεσο ψεκασμό και συνεχώς μεταβαλλόμενο χρονισμό των βαλβίδων. Επίσης, διαθέτει αντλία λαδιού διπλής χωρητικότητας και ρυθμιζόμενη αντλία νερού που μπορεί να απεμπλακεί κατά την εκκίνηση για τη βελτίωση της αποδοτικότητας του καυσίμου αλλά και τη μείωση του χρόνου ζεστάματος.
Ο κινητήρας ακόμα διαθέτει καλύμματα για την ελάττωση των θορύβων και μια απομονωμένη μπεκιέρα, η οποία όπως αναφέρει η εταιρία βοηθά στο να θέσει ένα νέο σημείο αναφοράς για τον θόρυβο και τους κραδασμούς των 3-κύλινδρων κινητήρων, που είναι ανώτερος από πολλά τετρακύλινδρα σύνολα.
Πιο λεπτομερή χαρακτηριστικά δεν δόθηκαν στη δημοσιότητα από την Opel, αλλά η γερμανική εταιρία ανέφερε ότι ο κινητήρας της θα παράγει 115 ίππους με 166 Nm ροπής και συνολικά είναι 20 % πιο αποδοτικός από τον ατμοσφαιρικό 1600άρη.
Το πρώτο αυτοκίνητο που θα εφοδιαστεί με τον συγκεκριμένο κινητήρα είναι το Opel Adam και θα κυκλοφορήσει από το νέο έτος. Θα εφοδιάζεται με ένα 6-τάχυτο χειροκίνητο κιβώτιο, το οποίο ζυγίζει 37 κιλά, υπόσχεται εξαιρετικές και ομαλές αλλαγές.
Στις σχετικές ειδήσεις η Opel ανακοίνωσε πως θα προσλάβει 350 νέους μηχανικούς οι οποίοι θα εργαστούν στο International Technical Development Center στο Rüsselsheim (300 άτομα) και στο Torino Engineering Center (50 άτομα).
Περισσότερες λεπτομέρειες μπορείς να βρεις στο δελτίο τύπου που ακολουθεί.
[learn_more caption=”Δελτίο Τύπου”]
New All-Aluminum 3-Cylinder Turbo Sets Refinement Benchmark
- New 85 kW/115 hp, 1.0-liter turbo raises bar for three-cylinder refinement
- First in all-new family of small-displacement direct injection gasoline engines to debut in Opel ADAM
- Higher torque, better fuel efficiency than 1.6-liter engine
- Cylinder head-integrated exhaust manifold
- Teamed with all-new six-speed gearbox, 30 percent lighter than predecessor
Rüsselsheim. Clean, smooth and quiet: Opel’s all-new three-cylinder will be celebrating its world premiere at the Frankfurt International Motor Show in September. The 1.0-liter turbo gasoline engine is not only climate-friendly, it also represents a new benchmark for refinement in three-cylinder engines, with noise and vibration characteristics superior to many four cylinder units.
Developing 85 kW/115 hp, this pocket powerhouse also delivers high low-end torque of 166 Nm all the way from 1,800 to 4,700 rpm, belying its diminutive size. The 1.0 SIDI Turbo (Spark Ignition Direct Injection) generates more torque throughout its operating range than equally powerful, higher displacement engines, while fuel efficiency is improved by 20 percent compared to Opel’s current 1.6-liter naturally aspirated power unit.
To be launched in the ADAM small car next year with an all-new six-speed gearbox, the 12-valve, 1.0 turbo is the first in a new, modular family of three and four-cylinder gasoline engines in the up to 1.6 liters class. State-of-the-art technologies such as direct injection, continuously variable valve timing, and a lightweight aluminium cylinder-block, are key efficiency enablers. Opel expects the new engine family to deliver impressive fuel economy and CO2 emissions significantly lower than 100 g/km.
“In developing this small engine, we not only set out to minimize fuel consumption and CO2 emissions, we also wanted to demonstrate that three cylinders can be just as refined as four or more,” says Dr. Matthias Alt, Opel’s Chief Engineer, Small Gasoline Engines. “We tackled at source the balance, noise and vibration issues typical of conventional three-cylinder engines, and we’re confident customers will be pleasantly surprised by the results. This is a very lively and refined three-cylinder engine which doesn’t compromise on driving fun.”
German engineering for class-leading acoustics
Opel engineers started with a clean sheet of paper, which enabled the incorporation of a series of measures to eliminate the typical, ‘off-beat’ running characteristics which have traditionally accompanied the economical driving appeal of three-cylinder engines.
The cylinder block made of high pressure die-cast aluminum is designed to reduce radiated and structure-borne engine noise, as well as reduce weight. The high-pressure fuel rail and injectors are also structurally isolated from the cylinder head to minimize the transmission of pulsing, while the fuel pump and fuel line are acoustically treated.
Another major contributor to refinement is the installation of a balance shaft in the oil sump. Driven by a chain with inverted teeth for quiet running, the counter-rotating shaft spins at crankshaft speed and is carefully mass-optimized to offset the inherent vibrations from a three cylinder operation.
Other noise attenuation measures include: acoustically-optimized covers for the top and front of the engine, the intake manifold and camshaft housings; crankshaft isolation with iron main bearing inserts; inverted teeth for camshaft drive chain; a low-hiss turbo compressor; and a lower oil pan in steel.
As a result of these engineering features, the new 1.0 SIDI Turbo is not only more refined than other three-cylinder engines, but also quieter than many four-cylinder units. For example, in bench testing at full throttle, it emits lower noise levels across all engine speeds than similarly powerful gasoline turbos with 1.6-liters displacement. Its inherent refinement is so good, that the need for additional in-car sound insulation, or complex engine mountings and sub-frames, is significantly reduced.
Strong power and torque
The 1.0 SIDI Turbo also packs a punch, generating more torque than Opel’s current 1.6-liter, naturally-aspirated engine, as well as the same 85 kW/115 hp maximum power output.
Jewel-like precision engineering is used in the integration of the exhaust manifold inside the aluminum cylinder head, which is bolted directly to the low-inertia, water-cooled turbocharger. This compact installation contributes to the delivery of a fast boost charge for strong, low-end power. Maximum torque of 166 Nm from just 1,800 rpm is almost 30 percent higher than the 1.6-liter engine generates at the same rpm.
The six-hole fuel injectors are centrally located above each piston to provide efficient combustion, and dual cam-phasing enables variable valve timing for optimum engine breathing. A twin displacement oil pump and a switchable water pump, which is disengaged when the engine coolant is cold in order to accelerate warm-up, also contribute to low fuel consumption.
All-new, weight-saving six-speed gearbox
The 1.0 SIDI Turbo is mated to an all-new, six-speed manual gearbox specially designed for medium torque applications. With a dry weight of only 37 kilograms, it is about 30 percent lighter than its current counterpart. It is also extremely compact, measuring just 375 mm along its axis.
Featuring superior shift quality, with a short lever travel and low shifting effort, the new transmission incorporates many of the refinements recently introduced on Opel’s next-generation gearboxes. These include gears with wide, asymmetrically-cut dog teeth, and triple-cone synchronizers for first/second gear, with double cones for third/fourth. Reverse gear is also synchronized.
The new gearbox will be used in a broad range of small and sub-compact Opel vehicles with engines rated at up to 220 Nm torque. For optimum powertrain efficiency in each application, the matrix of gearing choices comprises 12 sets of gear ratios and seven final drives.
Next step in Opel’s powertrain renewal program
The launch of the 1.0 SIDI Turbo and its new six-speed gearbox is the latest step in the renewal of Opel’s powertrain portfolio, which will see three new engine families and 13 new engines introduced between 2012 and 2016, plus a host of new transmissions.
The program began with the launch of the first engines in new mid-size gasoline and diesel families. These 1.6-liter turbo units are now joined by the 1.0 turbo, as the first example of a new, small displacement engine family. All will be built at GM’s new Szentgotthard plant in Hungary, where gasoline and diesel engines are produced on a shared assembly line.
New generation Opel power plants are focused on meeting a growing customer demand for ‘downsized’ engines which are able to deliver reduced fuel consumption and CO2 emissions, in combination with the power and refinement typical of larger displacement engines.
Opel is hiring 350 Engineers
ITDC will be enhanced and get additional responsibilities in the global network
Rüsselsheim. Opel is hiring 350 engineers in order to support the brand’s ongoing product offensive. 300 of them will be hired to work at the International Technical Development Center in Rüsselsheim, the Torino Engineering Center is looking for 50 new engineers. New hires at ITDC Rüsselsheim will be in vehicle engineering as well as in powertrain engineering. Therewith Opel strengthens the role of the International Technical Development Center (ITDC) in Rüsselsheim with currently more than 6,000 employees.
The main areas of hiring are simulation, validation, construction, cost engineering and accessories engineering. For powertrain Opel is mainly looking for experts in the areas of engine and transmission engineering and calibration. The hiring process has already started and will be finalized by the end of the year
“This is not only an evident proof that Opel/Vauxhall is taking the realization of its product offensive seriously. It is also another sign from General Motors that our parent company values German engineering and so the German ITDC is taking on more work in order to support Opel and Europe,” said Michael Ableson, Vice President Engineering and Member of the Board. “By doing that we are securing the long-term importance of the ITDC as an integral part of GM’s global engineering network.”
In addition, GM will make more use of synergies between the brands, particularly between Buick and Opel will increase. This will result in further economies of scale that benefit both brands.
The recruitment goes along with the 230 million euro investment that GM announced in April 2013. This investment will be used for building new testing facilities into its European Product Development Center at the Opel headquarters in Rüsselsheim and at the proving ground in Dudenhofen. New dynamometers for engines and transmissions will replace older equipment to allow for development of the following generation of powertrains for 2020 and beyond. This will be a key enabler for Opel/Vauxhall in the development of next generation engines and compliance with European and global emissions regulations.
The powertrain development work that will be done in Rüsselsheim will translate into engines and transmissions not only for Europe but also for the rest of the world. Dr. Thomas Johnen, Vice President Powertrain Engineering, said: “Two next generation gasoline engine lines, which will be key building blocks to reach the next step of environmentally friendly mobility solutions, will be developed in Rüsselsheim for applications in Europe and worldwide.”
Opel and GM are investing heavily into future Opel/Vauxhall products. Four billion euros have been earmarked for future product between 2013 and 2016. Through 2016, Opel is introducing 23 new models and 13 new powertrains.