This program was held aimed at improving the competency of technicaldrawing of vocational students in the Municipality of Kediri. Competence in this service consists of three aspects, namely affective, cognitive, and psychomotor. This community service was held at the Design Laboratory of the Mechanical Engineering of the Polytechnic of Kediri in August to Desember 2018 with the object of service being vocational students in the Department of Mechanical Engineering and Automotive. This program is carried out with a model of meeting in the classroom, giving theory, practicum, performance of making parts with image models and real object models. The improvement of students' abilities was measured using observation sheets of student activities to determine the improvement of theaffective aspects of students, the pretest and posttest instruments to determine the increase in cognitive aspects of students, the worksheets of students to determine the improvement of psychomotor aspects. The first output of this program is to increase the ability of vocational students in the field of mechanical engineering with the help of computers using CAD-based software. The next output is a competency certificate that will be given to students in accordance with their competencies.

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The increase in NOx levels produced by CNG-fueled engines occurs when the fuel switches from gasoline to gas fuel (CNG). The author changed the otto 4 stroke gasoline engine, into a CNG-fueled motorbike and provided additional cooling in the form of a burst of air to the cylinder block. Changes in engine block temperature are detected using a temperature sensor placed on the engine oil. Bursts of air cooling result in temperature changes in engine oil. Changes in engine oil temperature are accompanied by changes in the resulting NOx emissions. This study shows that with a decrease in engine oil temperature in the combustion engine, NOx emission levels also decrease. From the research results it can be ignored that by providing additional air bursts will be able to reduce NOx emissions by up to 18%

Sambal pecel merupakan salah satu produk makanan khas nusantara. Home industry Dapoer Wima termasuk salah satu produsen makanan khas tersebut yang berasal dari Kediri. Kebutuhan pasar yang menjanjikan, namun di home industry tersebut belum didukung oleh peralatan produksi yang memadai. Proses penggilingan sambel pecel dilakukan di luar area produksi sehingga tidak efisien serta tidak terjaminnya higienitas produk. Tujuan dari program ini adalah untuk mendesiminasikan mesin penggiling pada home industry Sambel Pecel Dapoer Wima sehingga lebih efektif dan higienis produknya. Metode pelaksanaan program meliputi pengumpulan data, pembuatan desain mesin, perhitungan perancangan mesin, manufaktur mesin, pengujian mesin, dan bimbingan teknis pengoperasian serta penyerahan mesin ke pengguna. Hasil program yaitu mesin penggiling sambel pecel berkapasitas 10 kg/jam dengan sepesifikasi penggerak berupa motor listrik AC 1 phasa berdaya 0,5 hp, menggunakan transmisi berjenis pulley berdiamater 7,62 cm dan 25,4 cm  dan v-belt tipe A, penggiling menggunakan screw conveyor dengan kapasitas pemindah 0,0257 m3/menit, dan material rangka menggunakan besi siku.